Nexa DC-108 Owner's manual

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

Nexa DC-108 Owner's manual

Brand: Nexa

Model: DC-108

Type: Owner's manual

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