Nexa DC-108 Owner's manual

Nexa
Brand
Nexa
Model
DC-108
Type
Owner's manual
DC-108
Wireless Control Panel
for Nexa’s 868 MHz
smoke alarms
I. SAFETY INFORMATION
This instruction manual contains important information on the correct installation and operation of DC-108.
Read this manual fully and carefully before attempting to operate DC-108.
Use DC-108 only as specified in this manual. Otherwise, the protection may be impaired.
Environment conditions
! Operation Temperature: -10~50℃
! Ambient Humidity: 10%-90%
Maintenance & Clearing
! Repairs or servicing not covered in this manual should only be performed by qualified personnel.
! Clean DC-108 with a dry cloth. Do not use abrasives or solvents on it.
! Make sure that your electrical circuit are not overloaded.
! When the battery is low, replace with a fresh one.
Safety symbols
Comply with EMC
II. GENERAL DESCRIPTION
Thank you for using Nexa’s DC-108. To ensure that you can get the most from it, we recommend that you
read and follow the manual carefully before use.
DC-108 can interconnect with Max 30 smoke alarm. This unit uses 868.4MHz RF interface to perform
bi-directional communication with detector alarm.
III. SPECIFICATION
Power Source: AC adapter 230VAC, 50-60Hz, 9W, 9VDC current>30mADC
Socket Pin " Ground, Casing " Positive
External Diameter " 6.2mm, Internal Diameter " 2.0mm
Battery Back-up: 3pcs 1.5V Alkaline Battery
Battery Back-up Life: Operation for 3 days (Alkaline battery)
Operation Current: <35mA (In Alarm with backlight on), 10uA (Standby)
Operation Temperature: -10oC-50oC
Ambient Humidity: 10%-90%
Wireless RF frequency: 868.4MHz within 100 meters distance in open space
Display: LCD
Alarm function: “Alarm” is when detector/alarm gets alert
“Low Battery” is when control unit/alarm gets low battery
Interconnect facility: Centralized System with maximum 30 smoke detectors
Coding Selection: 16 combinations of dip switch coding with 30 Software identify users
Standard Applied
Dimensions: 140 (L) x 75 (W) x 31 (H) mm
Weight: 176.5g (including battery)
Accessories: 3pcs 1.5V AAA battery, Bracket, Anchor & Screw, Instruction Manual, AC Adapter
IV. NAME AND FUNCTIONS
V. DC-108 OPERATION
Product Description
Nexa’s Control Panel (DC-108) is an intelligent centralized system. DC-108 can interconnect with smoke
alarm (MTS-166SRF/8M, GNS-2236RF), DC-108 can set an identification number to each alarm which
maintains as a connecting network. The status between DC-108 and alarm can be transmitted and received
as data to each other using 868.4MHz RF wireless frequency.
Nexa’s Control Panel (DC-108) has 4 buttons input, (TEST, ,  & ENTER) for controlling the Control Panel
and setting the network with alarm. All information / status from alarm (in the same network) can be displayed
on the LCD of the Control Panel. If the alarm receives alarm signal, the Control Panel will sound, LED will
flash to inform to user, and display the identification no. of alarm that is triggered.
In normal condition, the Control Panel displays clock and room temperature.
Clock Setting
1. Press and hold “ENTER” button for 3 seconds to go to clock setting mode.
2. “Hour” number is flashed.
3. Press  or  button to set the value
4. Press “ENTER” button to confirm and adjust next item. The adjust order is
hour  minute  month  day.
5. Finally press “ENTER” button to finish adjusting.
6. The setup process is aborted when “ENTER” button is pressed and held for
3 seconds or no any key pressed for 10 seconds.
VI. INTERCONNECT SETTING
By connecting the DC-108 and the alarm, user can set a network at home. After user setting, the status of
the alarm can be displayed on the Nexa’s Contol Panel.
The setting is easy and fast-operated. Below is the steps for interconnect setting:
1. DIP switch - Set same number
For the DC-108 and each alarm/detector, it’s a 4pin DIP switch.
Different DIP switch setting cannot connect with alarms and construct a networks.
* User need to set the DIP switch to same value to construct a network.
Same DIP value to form a network
2. Identification number setting (Default is “00”)
Next, using the Control Panel, user can set an identification number for each alarm. That identification
number is programmed inside the alarm and the default number is “00”.
In the Control Panel, press  or,  button to choose the number. (For example “02”)
Notice: Maximum of units setting is 99.
DEFAULT NUMBERS
“01”- “30” is set for SMOKE ALARMS, models as MTS-166RF/8M, GNS-2236RF
DC-108 can handle several different types and models of alarms/detectors,
however, all models are not available in Nexa brand as Heat Alarm, GAS detector
and CO detector in 868MHz.
Location of Connection button on Alarms as shown below
MTS166RF/8M GNS-2236FR
3. Checking identification number
Finally, for checking whether the identification number is programmed, user can
press the test button of the Alarm. The Control Panel then receives the status and
display on the LCD.
After setting the alarm one-by-one, the network is constructed as below. It is easy
and simple for setting.
VII. COMMUNICATION
After setting a network with DC-108, the signal from alarm/detectors in the
network can be checked by Nexa’s Control Panel. Below is how the
communication happened.
Let’s use the network demonstrated in last
chapter.
DIP switch of each units is set (become a network) and
the identification numbers are also constructed.
In normal mode, DC-108 works as a clock /
thermometer. Both Clock and temperature are
shown on the LCD display as right diagram.
In fact, DC-108 monitors the alarm operation
internally. While the alarm is triggered, Control Panel will display the status of
that unit immediately.
For example, the diagram on the right shows the
smoke alarm”03” detects smoke at 10:15pm.
1. Smoke alarm “03” will alarm itself.
2. A signal from “03” is sent to DC-108.
3. DC-108 gets the signal. LCD displays “03” with alarm icon.
4. Blue backlight flashes. Beep sound output
That status will hold until the alarm stopped
Then, DC-108 will be back to normal mode.
There are three situations possibly happened in Control Panel:
1.) Alarm mode
LCD display the identification no. and the type of the alarm.
LCD display “fire” icon to indicate the detection.
Blue backlight flashes.
Sound output occurred.
Red LED flashes and indicates alarm happened.
2.) Low battery mode
LCD display the identification no. and the type of the alarm.
LCD display “low battery” icon for indication.
Blue backlight flashes.
Orange LED is flashed and indicated alarm happened.
3.) Test mode
It happens when user press the test button of the alarm/detector.
As the function of test button is to simulate the alarm happened, the alarm / detector will send the alarm
signal to DC-108.
Therefore, DC-108 will show the situation same as (1.)
Waste electrical products should not be disposed of with normal household waste. Please recycle
where facilities exist. Check with your Local Authority or retailer for recycling advice. New regulation
will encourage the recycling of Waste from Electrical and Electronic Equipment (European "WEEE
Directive" effective August 2005).
Manufacturer
Garvan Enterprises Ltd.
Hong Kong
Distributor:
Nexa Trading AB
Sweden
www.nexa.se
Ver: 15-Oct-2015
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Nexa DC-108 Owner's manual

Nexa
Brand
Nexa
Model
DC-108
Type
Owner's manual
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