SevenCompact™ S220
pH/Ion meter
Reference Manual
30459013A4/24/2018 8:14 AM- Schema ST4 PDF engine -Layout by Victor Mahler
SevenCompact™ S220
Table of Contents
1 Introduction 3
2 Safety information 4
2.1 Definitions of signal words and warning symbols ............................................................ 4
2.2 Product specific safety notes ......................................................................................... 4
3 Design and Function 6
3.1 Overview..................................................................................................................... 6
3.2 Rear panel connections ................................................................................................ 7
3.3 Display and icons........................................................................................................ 8
3.4 Softkeys...................................................................................................................... 9
3.5 Key controls................................................................................................................ 9
3.6 Alphanumeric keypad................................................................................................... 10
3.6.1 Entering alphanumeric characters ................................................................... 10
3.6.2 Editing values in tables.................................................................................. 10
3.7 Navigating within a menu............................................................................................. 11
3.8 Navigating between menus........................................................................................... 11
3.9 Endpoint types............................................................................................................. 11
4 Putting into Operation 12
4.1 Scope of delivery ......................................................................................................... 12
4.2 Mounting uPlace™ electrode arm.................................................................................. 12
4.3 Installing power supply................................................................................................. 13
4.4 Connecting sensors...................................................................................................... 14
4.5 Switching the instrument on and off ............................................................................... 14
4.6 Connectivity ................................................................................................................ 14
5 Configuring the Instrument 16
5.1 Sample ID................................................................................................................... 16
5.2 User ID ....................................................................................................................... 16
5.3 Stirrer ......................................................................................................................... 17
5.4 Data storage ............................................................................................................... 17
5.5 System settings ........................................................................................................... 18
5.5.1 Language..................................................................................................... 18
5.5.2 Time and Date .............................................................................................. 18
5.5.3 Access Control.............................................................................................. 18
5.5.4 Audio signal ................................................................................................. 18
5.5.5 Operator mode.............................................................................................. 19
5.5.6 Screen settings ............................................................................................. 19
5.6 Service ....................................................................................................................... 19
5.7 Instrument Self-test....................................................................................................... 20
6 Measuring pH 21
6.1 Measurement settings................................................................................................... 21
6.1.1 Sensor ID / SN .............................................................................................. 21
6.1.2 Calibration Settings ....................................................................................... 22
6.1.3 Measurement Settings.................................................................................... 22
6.1.4 Endpoint Type............................................................................................... 23
6.1.5 Temperature Settings ..................................................................................... 23
6.1.6 Measurement Limits ...................................................................................... 24
6.2 Sensor Calibration........................................................................................................ 24
6.2.1 Running a one-point pH calibration................................................................. 24
6.2.2 Running a multi-point pH calibration ............................................................... 24
6.3 Sample Measurement................................................................................................... 25
Table of Contents 1SevenCompact™ S220
7 Measuring Ion 26
7.1 Measurement settings................................................................................................... 26
7.1.1 Sensor ID / SN .............................................................................................. 26
7.1.2 Calibration Settings ....................................................................................... 26
7.1.3 Measurement Settings.................................................................................... 27
7.1.4 Endpoint Type............................................................................................... 28
7.1.5 Temperature Settings ..................................................................................... 28
7.1.6 Measurement Limits ...................................................................................... 28
7.2 Sample Measurement................................................................................................... 29
8 Managing data 30
8.1 Measurement data ....................................................................................................... 30
8.2 Calibration data........................................................................................................... 30
8.3 ISM data..................................................................................................................... 31
8.4 Transfer Interfaces........................................................................................................ 32
9 Maintenance and Care 33
9.1 Cleaning the Instrument................................................................................................ 33
9.2 Maintenance of electrodes............................................................................................. 33
9.3 Transporting the instrument........................................................................................... 34
9.4 Disposal..................................................................................................................... 34
10 Troubleshooting 35
10.1 Error messages ........................................................................................................... 35
10.2 Error limits .................................................................................................................. 36
11 Sensors, Solutions and Accessories 38
12 Technical Data 42
13 Appendix 44
13.1 Buffers........................................................................................................................ 44
Table of Contents2 SevenCompact™ S220
Introduction 3SevenCompact™ S220
1 Introduction
Thank you for choosing a METTLER TOLEDO SevenCompact™ S220. The SevenCompact™ S220 is an easy-
to-operate instrument for measuring pH and ion.
About this document
The instructions in this document refer to a pH/ion meter running firmware version 2.01.03 or higher.
If you have any additional questions, contact your authorized METTLER TOLEDO dealer or service represen-
tative.
u www.mt.com/contact
Conventions and symbols
Refers to an external document.
Note
for useful information about the product.
Elements of instructions
§
Prerequisites
1 Steps
2 ...
ð Intermediate results
ð Results
Safety information4 SevenCompact™ S220
2 Safety information
• This Reference Manual contains a full description of the instrument and its use.
• Keep the Reference Manual for future reference.
• Include the Reference Manual if you transfer the instrument to other parties.
Only use the instrument according to the Reference Manual. If you do not use the instrument according to the
Reference Manual or if it is modified, the safety of the instrument may be impaired and Mettler-Toledo GmbH
assumes no liability.
2.1 Definitions of signal words and warning symbols
Safety notes contain important information on safety issues. Ignoring the safety notes may lead to personal
injury, damage to the instrument, malfunctions and false results. Safety notes are marked with the following
signal words and warning symbols:
Signal words
WARNING
A hazardous situation with medium risk, possibly resulting in death or severe injury if
not avoided.
NOTICE
A hazardous situation with low risk, resulting in damage to the instrument, other
material damage, malfunctions and erroneous results, or loss of data.
Warning symbols
Electrical shock
2.2 Product specific safety notes
Intended use
This instrument is designed to be used by trained staff. The SevenCompact™ S220 is intended for measuring
pH and ion.
Any other type of use and operation beyond the limits of use stated by Mettler-Toledo GmbH without consent
from Mettler-Toledo GmbH is considered as not intended.
Responsibilities of the instrument owner
The instrument owner is the person holding the legal title to the instrument and who uses the instrument or
authorizes any person to use it, or the person who is deemed by law to be the operator of the instrument. The
instrument owner is responsible for the safety of all users of the instrument and third parties.
METTLER TOLEDO assumes that the instrument owner trains users to safely use the instrument in their
workplace and deal with potential hazards. METTLER TOLEDO assumes that the instrument owner provides the
necessary protective gear.
Safety notes
WARNING
Danger of death or serious injury due to electric shock!
Contact with parts that carry a live current can lead to death or injury.
1 Only use the METTLER TOLEDO AC adapter designed for your instrument.
2 Keep all electrical cables and connections away from liquids and moisture.
3 Check the cables and the plugs for damage and replace damaged cables and plugs.
Safety information 5SevenCompact™ S220
NOTICE
Risk of damage to the instrument due to the use of unsuitable parts!
Using unsuitable parts with the instrument can damage the instrument or cause it to
malfunction.
− Only use parts from METTLER TOLEDO that are intended to be used with your instrument.
FCC Rules
This device complies with Part 15 of the FCC Rules and Radio Interference Requirements of the Canadian
Department of Communications. Operation is subject to the following conditions: (1) this device may not cause
harmful interference, and (2) this device must accept any interference received, including interference that may
cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to
Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful inter-
ference when the equipment is operated in a commercial environment. This equipment generates, uses, and
can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual,
may cause harmful interference to radio communications. Operation of this equipment in a residential area is
likely to cause harmful interference in which case the user will be required to correct the interference at his own
expense.
Design and Function6 SevenCompact™ S220
3 Design and Function
3.1 Overview
1
2
3
4
5
Number Key Press and release Press and hold for 2
seconds
1
Switch meter on Switch meter off
2
Display
3
Softkeys The function of the softkeys varies from screen to
screen
4
• Start or end
measurement
(measurement screen)
• Confirm input or start
editing a table
• Exit menu and go back
to measurement screen
Switch between
measurement close-up
screen and full-information
screen
5
Start calibration Review the last calibration
data
Design and Function 7SevenCompact™ S220
3.2 Rear panel connections
1
3
4
5 6 7 8 9
2
1
Reference socket for reference electrodes
2
Digital socket for digital electrodes
3
RS232 interface
4
DC power supply socket
5
BNC socket for mV/pH signal input
6
RCA (Cinch) socket for temperature signal
input
7
Mini DIN socket for METTLER TOLEDO stirrer
8
USB-B interface
9
USB-A interface
PIN assignment for the RS-232 interface. METTLER TOLEDO printers such as RS-P25 can be connected to this
interface.
Design and Function8 SevenCompact™ S220
3.3 Display and icons
There are two modes available for the display representation: the full-information screen with all the information
displayed, and the measurement close-up screen uFocus™, where the measurement information is shown in
large font. To toggle between these views, press and hold Read during, after or before a measurement.
Standard view
Data Channel Menu Mode
24-06-2017
10:34
InLab 742
uFocus™ view
Data Channel Menu Mode
24-06-2017
10:34
InLab 742
Data
Menu
Mode
24-06-2018
10:34
1
2
3
4
5
6
12
11
10
9
13
7
8
14 15
Icon Description
1 Stirrer icon (appears when stirring is active)
2 7.000 pH
Measurement value and used measurement unit
3 24-06-2018
10:34
Date and time
4 25°C
Measurement temperature
5 MTC Temperature Correction
ATC: Temperature sensor connected
MTC: no temperature sensor connected or detected
6 Stability Criterion
Strict
Standard
Fast
7 Endpoint Type
A: Auto; measurement stops automatically when the signal is stable
M: Manual; to manually stop the measurement
T: Timed; the measurement stops after the preset time
Stability Signal appears if the signal is stable
8 User ID
9 M
Number of data sets in memory
10 Sensor ID
11 Sample ID
12
Buffer groups or standards
Design and Function 9SevenCompact™ S220
Icon Description
13 ISM
®
sensor connected
14
Softkeys are buttons whose function changes depending on the context.
See [Softkeys}Page9]
15
16
17
3.4 Softkeys
The meter has four softkeys. The functions assigned to them change during operation depending on the appli-
cation. The assignment is shown on the bottom line of the screen.
Data
Access data menu
Mode
Change measurement mode
Press and hold to change the channel
selection
Menu
Access meter settings
Move one position to the right Increase value
Move one position to the left Decrease value
Scroll up in the menu Scroll to next page of results
Scroll down in the menu
Calculate
Calculate the calibration values
Edit
Edit table or value
Select
Select the highlighted function or setting
Delete
Delete selected data
Start
Start the measurement
Save
Save data, setting or value
Interface
Choose the transfer interface.
Yes
Confirm an entry
Transfer
Transfer selected data
No
Reject an entry
3.5 Key controls
Key Press and release Press and hold for 2 seconds
Switch meter on Switch meter off
• Start or end measurement
(measurement screen)
• Confirm input or start editing a table
• Exit menu and go back to measurement
screen
Switch between measurement close-up
screen and full-information screen
Start calibration Review the last calibration data
Softkeys
The function of the softkeys varies from
screen to screen
Design and Function10 SevenCompact™ S220
3.6 Alphanumeric keypad
3.6.1 Entering alphanumeric characters
The meter has a screen keypad for entering IDs, SNs and PINs. Both numbers and letters are allowed for these
entries. When entering a PIN, each character entered will be displayed as ( * ).
Enter Sample ID
Exit
Press 'Read' to confirm
1 Move the cursor position using the , or keys.
2 Press Read to confirm an entry.
ð The position of the next character that is entered is blinking.
3 Repeat these steps to enter additional characters.
- or -
To delete an entry, select the character. Navigate to Delete and press Read.
4 To confirm and save the entries, navigate to OK and press Read.
- or -
To reject the entries, press Exit.
Entering IDs / PIN
The four softkeys and the Read key are used for navigating on the keypad and entering the ID/PIN.
Example text: WATER
1 If 1 is highlighted, press once.
ð Q is highlighted.
2 Press once.
ð W is highlighted.
3 Press Read to enter W.
4 Reposition the selection to A, T, E and R, confirm each selection with Read.
5 Reposition the selection to OK, and press Read to save the ID.
Note
• Instead of entering an ID with the alphanumeric keypad, you can also use a USB-keyboard or a USB-
barcode scanner. In case a character is entered or scanned that is not available on the instrument
keyboard, the entry will be displayed as an underscore (_).
3.6.2 Editing values in tables
The meter allows you to enter, edit or remove values in tables. (for example, temperature and buffer values for
a customized buffer group). This is accomplished by using the softkeys to navigate from cell to cell.
1 Press Read to start editing the cell in the table.
ð The softkeys on the display change.
2 Press and to enter the value and press Read to confirm.
ð The softkeys change back to and .
3 Navigate to a cell and press Delete to remove a value.
4 To finish editing the table, navigate with the and to highlight Save.
5 Press Read to confirm the action and exit the menu.
Design and Function 11SevenCompact™ S220
3.7 Navigating within a menu
1 Press Menu to enter the settings.
2 Move the selection to a menu item using the or keys and press Select to open the selection.
3 Apply the required settings using the navigation keys.
- or -
If applicable, move the selection to the next menu item in the hierarchy using the or keys.
4 Press Exit to return to the previous menu screen, or press Read to return to the measurement screen
directly.
3.8 Navigating between menus
The meter display consists of a measurement frame, softkeys, areas for status icons and underlying menu
areas. To access the menu areas and to navigate between them, use the softkeys.
1 Press Menu to enter the settings.
2 Move the selection to the top of the screen to select the tab using the or keys.
ð The navigation keys to navigate left and right are shown.
3 Move the selection to chose another tab using the or keys.
4 Press Exit to return to the measurement screen.
3.9 Endpoint types
A general setting that defines how the endpoint of the measurement is to be determined.
A
M
T
M
T
A
M
T
M
T
Automatic
Endpoint
Manual
Endpoint
Timed
Endpoint
Measurement stopped after time,
reading was stable
Measurement stopped after time,
reading was not stable
Measurement stopped manually,
reading was not stable
Measurement stopped manually,
reading was stable
Measurement stopped automatically,
reading was stable
Blinking letter
Defined measurement time elapsed
User presses Read
Signal becomes stable
Putting into Operation12 SevenCompact™ S220
4 Putting into Operation
4.1 Scope of delivery
Unpack the instrument and check the scope of delivery. Keep the calibration certificate in a safe place. Seven-
Compact™ is delivered with:
• uPlace™ electrode arm
• Sensors (kit version only)
• Universal AC adapter
• Transparent protective cover
• CD-ROM with Reference Manual and User Manual (English, German, French, Italian, Spanish, Portuguese,
Polish, Russian, Chinese, Japanese Korean, Thai)
• User Manual (print version, English, German, French, Italian, Spanish, Portuguese, Polish)
• Declaration of conformity
• Calibration certificate
4.2 Mounting uPlace™ electrode arm
The electrode arm can be used as stand alone or it
can be attached to the instrument on the left or right
side, according to your preferences. The height of the
electrode arm can be varied by using the extension
shaft part. Use the wrench to attach the extension
part .
Assembly of the electrode arm
1 Use the wrench to attach the base to the electrode
arm by tightening the screws. The electrode arm
can now be used in the stand alone mode.
Putting into Operation 13SevenCompact™ S220
2 Then insert the foot of the meter to the arm base
and shift the meter in the direction of the arrow to
make the foot fit.
3 Use the lock screw to attach the meter to the base
of the arm.
4.3 Installing power supply
WARNING
Danger of death or serious injury due to electric shock!
Contact with parts that carry a live current can lead to death or injury.
1 Only use the METTLER TOLEDO AC adapter designed for your instrument.
2 Keep all electrical cables and connections away from liquids and moisture.
3 Check the cables and the plugs for damage and replace damaged cables and plugs.
NOTICE
Danger of damage to the AC adapter due to overheating!
If the AC adapter is covered or in a container, it is not sufficiently cooled and overheats.
1 Do not cover the AC adapter.
2 Do not put the AC adapter in a container.
The instrument is operated using an AC adapter. The AC adapter is suitable for all supply line voltages ranging
from 100...240 V AC ±10% and 50-60 Hz.
PUSH
1 Insert the correct connector plug into the AC adapter
until it is completely inserted.
2 Connect the cable of the AC adapter with the DC socket
of the instrument.
3 Install the cables in such a way that they cannot be
damaged or interfere with operation.
Putting into Operation14 SevenCompact™ S220
4 Insert the plug of the AC adapter in a power outlet that is easily accessible.
ð To remove the connector plug, push the release button and withdraw the connector plug.
4.4 Connecting sensors
When connecting a sensor, make sure that the plugs are properly inserted. If you are using a sensor with a
built-in temperature probe or a separate temperature probe, connect the second cable to the ATC socket.
Example
− Connect a pH sensor to the BNC plug and if a temperature probe is integrated, connect the RCA (chinch)
plug to the ATC input.
- or -
Connect a conductivity probe to the conductivity input, a temperature probe is always built in and does not
need to be connected seperatly. If you have a digital sensor connect it to the digital input.
ISM
®
sensor
When connecting an ISM
®
sensor to the meter, one of the following conditions have to be met for the calibration
data to be transferred automatically from the chip of the sensor into the meter and is used for further
measurements. After attaching the ISM
®
sensor ...
• The meter must be switched on.
• (If the meter is already switched on) the Read key is pressed.
• (If the meter is already switched on) the Cal key is pressed.
We strongly recommend you to switch off the meter when disconnecting an ISM sensor. In doing so, you make
sure that the sensor is not removed while the instrument is reading data from or writing data to the ISM-chip of
the sensor.
The ISM icon appears on the display and the sensor ID of the sensor chip is registered and appears on the
display.
The calibration history, the initial certificate and the maximum temperature can be reviewed and printed in the
data memory.
4.5 Switching the instrument on and off
Switching on
− Press and release On/Off to switch on the instrument.
ð The firmware version, the serial number and the current date are displayed for a few seconds. After that
the instrument is ready for use.
Switching off
− Press and hold the On/Off key until the instrument switches to standby mode.
Note
• In the standby mode, the control circuit for the On/Off switch is energized. The rest of the instrument is no
longer energized.
4.6 Connectivity
Thanks to the plug & play capability, USB-sticks, barcode reader and printers are detected automatically.
Connection Use
RS232 interface RS-Printers
USB B interface
EasyDirect pH PC Software
USB A interface USB-printer, USB barcode reader
USB-stick with file format FAT12/FAT16/FAT32
The instrument adjusts the baud rate to the following settings in case no automatic baud rate synchronization
occurs (only with printer types RS-P25, RS-P26, RS-P28):
Putting into Operation 15SevenCompact™ S220
Printer Baud rate: 1200
Data bits: 8
Parity: none
Stop bits: 1
Handshake: none
Configuring the Instrument16 SevenCompact™ S220
5 Configuring the Instrument
1.
Sample ID
5.
System Settings
1. Enter Sample ID 1. Language
2. Auto Sequential 2. Time and Date
3. Select Sample ID 3. Access Control
4. Delete Sample ID 4. Beep
2.
User ID 5. Routine/Expert Mode
1. Enter User ID 6. Screen Settings
2. Select User ID
6.
Service
3. Delete User ID 1. Software Update
3.
Stirrer 2. Export Settings to USB-stick
1. Stir Before Measurement 3. Factory Reset
2. Stir During Measurement
7.
Instrument Self-test
3. Stir Speed
4. Stirrer Voltage Settings
4.
Data Storage
1. Storage Mode
2. Storage Destination
3. Time Interval Readings
4. Printout Format
5.1 Sample ID
Navigation: Menu > > Sample ID
Parameter Description Values
Enter Sample ID Alphanumeric sample ID with up to 16 characters can be entered.
A maximum of 10 sample IDs are stored in memory and listed for
selection. If the maximum number of IDs has been stored, the
meter will display the message Memory is full.
1…16 characters
Auto Sequential
On: Using this setting will automatically increment the sample ID
by 1 for each reading. If the last character of the sample ID is not
a number, then the number 1 will be added to the sample ID with
the second sample. This requires the sample ID to have less than
16 characters.
Off: The sample ID is not incremented automatically.
On | Off
Select Sample ID To select a sample ID out of a list of already entered sample IDs. List of available sample
IDs
Delete Sample ID To delete an existing sample ID out of the list, select the sample
ID you want to delete and press Read.
List of available sample
IDs
5.2 User ID
Navigation: Menu > > User ID
Parameter Description Values
Enter User ID Alphanumeric user IDs with up to 16 characters can be entered. A
maximum of 10 user IDs are stored in memory and listed for
selection. If the maximum number of IDs has been stored, the
meter will display the message Memory is full.
1…16 characters
Select User ID To select a user out of a list of existing users. List of available user IDs
Delete User ID To delete an existing user ID out of the list, select the user ID you
want to delete and press Read.
List of available user IDs
Configuring the Instrument 17SevenCompact™ S220
5.3 Stirrer
You can connect the METTLER TOLEDO external magnetic stirrer to the instrument. This stirrer is powered by the
instrument and will be automatically switched on/off according to the settings.
If a uMix or Compact stirrer is connected to the stirrer output, the option Stir During Measurement or Stir
Before Measurement can be selected. When the stirrer is active, the symbol is displayed.
Navigation: Menu > > Stirrer
Parameter Description Values
Stir Before
Measurement
On: Using this setting will include a stirring period before the
measurement starts (after pressing Read).
Off: No stirring before the measurement will take place.
On | Off
Enter Time
Defines the stir duration [s] if Stir Before Measurement is
activated.
3…60
Stir During
Measurement
On: Using this setting will results in stirring during the
measurement. When the measurement is stopped, the stirrer is
automatically switched off.
Off: No stirring during the measurement will take place.
On | Off
Stir Speed Defines the stir speed in steps, according to preferences and the
characteristics of the sample.
1…5
Stirrer Voltage
Settings
Defines the minimum and maximum voltages for the stirrer.
Stir Speed1: Defines the voltage for the lowest stirring speed.
Stir Speed5: Defines the voltage for the highest stirring speed.
0.5…8.0V
5.4 Data storage
Navigation: Menu > > Data Storage
The meter stores up to 1000 sets of measurement data in the memory. The number of data sets already stored
in the memory is indicated by MXXXX on the display. A message appears on the display when the memory is
full. To save further measurements if the memory is full, data has to be deleted first. You can select between
automatic and manual storage. Press Exit to discard the endpoint readings.
Parameter Description Values
Storage Mode
Automatic Storage: Stores/transfers every found reading to the
memory/interface or both automatically.
Manual Storage: If selected, Save appears on the display as
soon as a measurement has found an endpoint. Press Save to
save or transfer the endpoint readings. The readings can only be
stored once. When the data is stored, Save disappears from the
measurement screen.
Automatic Storage |
Manual Storage
Storage Desti-
nation
Select to transfer the data to the memory, Printer or PC.
Memory: Data will be stored in the internal memory of the
instrument.
Printer: Data will be printed to the connected printer.
PC: Data will be transferred to the connected PC, running
EasyDirect pH.
Memory | Printer | PC
Interval Readings Activates the function to measure at intervals.
The measurement series stops according to the selected endpoint
format or manually by pressing Read.
On | Off
Interval Time Define the time interval between the measurement points in [s] if
Interval Readings is activated.
1…3600
Configuring the Instrument18 SevenCompact™ S220
5.5 System settings
5.5.1 Language
Navigation: Menu > > System Settings > Language
Parameter Description Values
Language Defines the language for operation of the instrument. English | Deutsch |
French | Italian | Spanish
| Portuguese | Russian |
Polish | Chinese |
Korean | Japanese |
Thai | Turkish
5.5.2 Time and Date
Navigation: Menu > > System Settings > Time and Date
When starting the meter for the first time, the display for entering time and date appears automatically.
Parameter Description Values
Time Define the time and the time format for operation of the
instrument.
24-hour format (for example, 06:56 and 18:56)
12-hour format (for example, 06:56 AM and 06:56 PM)
12h| 24h
Time and Date Defines the date and the date format for operation of the
instrument.
Date
28-11-20xx (day-month-year)
11-28-20xx (month-day-year)
28-Nov-20xx (day-month-year)
28/11/20xx (day-month-year)
List of available date
formats
5.5.3 Access Control
Navigation: Menu > > System Settings > Access Control
A maximum of 6 characters can be entered as PIN. In the factory default settings, the PIN for deleting data is
set to 000000 and is activated, no instrument login password is set.
Parameter Description Values
System Settings To enable a PIN protection for the required access control ON.
When selected, the window for entering an alphanumeric PIN
appears.
1…6 characters
Deletion of Data Defines if the deletion of data is PIN protected. On| Off
Instrument Login Defines if the instrument login is PIN protected. On| Off
5.5.4 Audio signal
Navigation: Menu > > System Settings > Beep
Parameter Description Values
Beep Defines if an audio signal should be enabled. Keypress| Alarm
Messages|
Measurement Endpoint
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