Nexa NEXA-005 Firmware update

EN
0832-CPR-F1315
NEXA Trading AB
Karl Johansgatan 152, 414 51 Göteborg
NEXA-005
NEXA13316-CPR-001
EN14604:2005/AC:2008
Fire Safety and installed in buildings
Instructions for smoke alarm NEXA-005
Brief introduction
NEXA-005 detecting alarm is composed of sophisticated analog circuit and digital circuit. It is a
kind of low power consumption, low voltage photoelectric independent smoke alarm with 3v
lithium manganese battery, this battery can last for 5 years.
Characteristic
◆ photoelectric smoke detection
◆!high sensitivity
◆local smoke alarm memory
◆within normal detection mode and low sensitivity detection mode (hush)
◆within built-in 5 years lithium manganese batteries, battery cannot be replaced
◆5 years life end warning tone
◆low voltage warning tone
◆low power consumption.
Doc No: NEXA.NK-2000.20
Verson No: V1.1
Verson date: 2016-02-22
Article: 13316
15

Parameter
Technical
parameters
Smoke detector
Voltage
DC3V（built-in CR123A）
Low-
voltage
inspection
2.2V
Current
Working current
Quiescent current
≤120mA
≤2uA
Status
display
Normal operation
Red LED flashes every 6 minutes to
indicate the unit is functioning
Smoke detection (Alarm)or
key test
LED (red) flashes and continuous
alarm is given
Low sensitivity detection
(Hush or silent mode)
Activated by pressing button. Red
LED flashes every 10 seconds, to
indicate the smoke alarm is in alarm
silence or Hush mode. This mode
automatically ends after about 9
minutes.
Alarm memory
Following an alarm, the device will
activate alarm memory. In this
mode, the green LED flashes 3
tomes quickly every 43 seconds and
stops after 24 hours to let the user
know there has been an alarm.
Low-voltage inspection
An intermittent “chirp” with red LED
flash once every 43 seconds
Alarm
loudness
≥85dB/3m
Working
temperature
-10℃~+40℃
Ambient
humidity
≤95%RH（no condensation）

Appearance
（
Figure 1
）
NEXA-005
Figure 1
Dimension
Usage
Buzzer

Figure2
1. Take out the product and detach the mounting plate.
2. The battery pin (red) is OFF at beginning as figure 3
Turn it ON the battery pin will be moved into the pin groove position as figure 4
!
figure 3 figure 4
Make a battery pin handle and base surface on the same plane;
Move the battery pin to the position of slot, turn the battery pin and embed the pin into the slot to make
the pin levels with the base surface.
3. Installation of base
Press the hook of base mounting plate into detector’s positioning groove. Turn it clockwise and let
it slip into the groove.
Alarm memory indicator
light
（green LED）
Test
Alarm indicator light
（red LED）
Battery pin (red)
slot
Red battery pin--
OFF
Battery pin groove
Battery pin’s position
after installation--ON
hook
Mounting plate
Screw hole

4.1. Button Test
Press the test/mute button, if the red indicator light flashes quickly and meanwhile alarm is given, it
means the detector is working properly. At the same time, the detector enters low sensitivity detecting
state. About 9 minutes later, it enters normal detecting state from low sensitivity detecting state
automatically.
4.2. Low sensitivity detection (silent mode)
1. Use a small amount of smoke to make the detector alarm, and press the test/mute button. Then the
detector will enter low sensitivity detection and exit alarm state. The detector is silent (and will enter
normal detection state after 9 minutes), and won't alarm until smoke concentration is higher.
2. Press the test/mute button again and you can cancel low sensitivity detection. The detector will enter
normal detection state.
Note: After canceling low sensitivity detection, if there is some residual smoke, the detector will
continue to alarm.
5. Alarm memory
After alarm is made, the detector will have alarm memory. The green LED will flash every 1.3 seconds
for 3 times, which will last for 43 seconds. So the user can tell if the detector has entered alarm state
from a distance without touching the detector. LED display will quit after 24 hours. The first time you
press the test/mute button after alarm is made, the detector will hint by special alarm mode. After
releasing the test/mute key, alarm memory will be purged. Then you press the test/mute button and it
will be normal key test.
Installation
1. Choose a suitable installation position.
2. According to the holes of mounting plate, drill a hole in the needed place of ceiling and stuff the plastic
nail seat into the hole.
3. Use the screw to fix the mounting plate onto plastic nail seat.
4. Embed the two snap joints on the detector base into the detector slot. Turn the product clockwise in
order to fasten it to the mounting plate tightly.
5. Test after the installation. Press the test/hush button, if the red indicator light flashes quickly and
continue alarms at the same time, it means the detector is working properly. At the same time, the
detector enters low sensitivity detecting state, the red LED light flashes every 10 seconds. About 9
minutes later, it enters normal detecting state from low sensitivity detecting state automatically or press
the test/mute button again and cancel low sensitivity detecting state.
Maintenance
1. It is better to test the smoke alarm weekly.
2. Clean the alarm every three months.
3. If you find the products are not in normal working state, check failure analysis and elimination first. If the
problem can not be removed, please do not dismantle by yourself. You shall seek the service of the
professional.

Failure analysis and elimination
Failure phenomenon
Analysis of cause
elimination method
remark
No response of the TEST
key
Battery Red pin is OFF,
detector is closed
Remove battery pin
to ON
Circuit faultor battery fault
Looking for
manufacturers or
professional services
Points for Attention
1. Do not install the product in the following environment such as hyper thermal, humid, dusty, kitchen,
bathroom and so on;
2. When installing, pay attention that there shall not be objects which will shelter from flash and block
making sounds in front of the alarm.
3.!Battery!not!replaceable!
Points for Abandoned Products
1. The packages are made up of renewable matters and please use them as circularly as possible;
2. The batteries and waste electrical appliances that have been used can not be abandoned with normal
household garbage.
Areas that should be avoided, for example,
ALARM DO NOT FIT IN THE KITCHEN OR BATHROOM, as cooking fumes or steam may trigger the alarm.
ALARM DO NOT FIT IN GARAGE, as exhaust fumes are likely to set it off.
ALARM DO NOT FIT NEAR A FIRE PLACE OR STOVE, as ash may trigger the alarm.
ALARM DO NOT FIT NEAR A AIR SOURCE HEAT PUMP, then the vent may trigger the alarm.
Warranty:
1. The manufacturer gives a 5 year warranty on this product. The battery is covered by the warranty.
In the complaint, the receipt proving the purchase date is required.
2. Damage caused by careless or improper use of the product is not covered by the guarantee of quality.
Manufacturer:
Nexa Trading AB,
Sweden
www.nexa.se
You will find the Declaration of Performance (DoP) on our website