Kingdun Electronic KD-122LA User manual

Ningbo Kingdun Electronic Industry Co.,Ltd
Add：No.28 Fengyuan Road Economic Development Area ofYuyao City（South Zone）Ningbo Zhejiang
P.R.China315400 .
KD-122LA Wireless Interconnected Fire Detecting Alarm
User manual
1. Brief introduction
KD-122LA Wireless Interconnected Fire Detecting Alarm is a photoelectric
smoke alarm with low power consumption. Internal precise analog circuit,
digital circuit and wireless transmission circuit make the detection work more
stable and reliable. It has wireless interconnection function, which means
when one unit makes alarm, other interconnected units within the interlink
range will alarm at the same time. This product has small volume and the
built-in large-capacity battery can provide service life of 10 years.
2. Product characteristics
Photoelectric smoke detection
Reliable performance and less nuisance alarms
Precise analog circuit and digital circuit
Low power consumption
Small size
Interlink range ＞ 100m (open field)
Service life of 10 years
3. Technical specification

Ningbo Kingdun Electronic Industry Co.,Ltd
Add：No.28 Fengyuan Road Economic Development Area ofYuyao City（South Zone）Ningbo Zhejiang
P.R. C h i n a 3 1 5 400 .
Technical parameters
Smoke detection
Voltage
DC3V（built-in CP605050）
Low-voltage
inspection
2.2V
Current
Alarm current
Quiescent current
≤120mA
≤2uA
Status display
Normal smoke
detection
LED (red) flashes once about
every 344 seconds, no alarm
sound
Smoke detection or
key test
LED (red) flashes and
continuous alarm is given
Low sensitivity
detection (silent
mode)
LED (red) flashes every 10
seconds, no alarm sound,
automatically cancel low
sensitivity detection about 9
minutes later
Alarm memory
LED (green) flashes 3 times
about every 43 seconds, and
stops 24 hours later. The first
time you press test/mute button
after alarm is made, the
detector will hint by special
alarm mode.
End of life
After power-up and work for 10
years, end-of-life warning will
be made. The buzzer beeps 3
times every 43 seconds.
Low-voltage
inspection
LED (red) flashes about every
344 seconds, beeps about
every 43 seconds.
Alarm
loudness
≥85dB/3m
Wireless
interconnection
Radio frequency
868MHz
Interlink range
≥100m (open field)
Interconnection /
learn indication
Red LED being steady on
means the product needs to
learn. Red LED flashing means
signal transmitting. Green LED
being steady on means the
product is ready to send
identification code. Green LED
flashing means the unit has
received wireless signal.

Ningbo Kingdun Electronic Industry Co.,Ltd
Add：No.28 Fengyuan Road Economic Development Area ofYuyao City（South Zone）Ningbo Zhejiang
P.R. C h i n a 3 1 5 400 .
transmission rate
Working
temperature
-10℃~+40℃
Ambient
humidity
≤95%RH (no condensation)
4. Appearance and dimensions
（
Figure. 1
）

Ningbo Kingdun Electronic Industry Co.,Ltd
Add：No.28 Fengyuan Road Economic Development Area ofYuyao City（South Zone）Ningbo Zhejiang
P.R. C h i n a 3 1 5 400 .
5. Installation
5.1 Functional diagram (Figure 2)
Figure 2

Ningbo Kingdun Electronic Industry Co.,Ltd
Add：No.28 Fengyuan Road Economic Development Area ofYuyao City（South Zone）Ningbo Zhejiang
P.R. C h i n a 3 1 5 400 .
5.2 Installation Instructions
5.21 Hold the mounting plate against the selected installation position on the
ceiling, and mark the center of the holes with a pencil. Drill a hole through the
pencil marks and use the enclosed screws and anchors to secure the
mounting plate. (See Figure 4)
5.22 Insert the hook of the mounting plate to the slot of the alarm, the
positioning column should also align with the positioning groove. Rotate the
alarm clockwise until it snaps into place.
Figure 4
Note 1. If you can’t rotate the alarm after insect the hook into the slot, please
check if the positioning column aligns with the positioning groove.
Note 2. If you can’t rotate the mounting plate easily, please use our
accessory in package. (See Figure 5)
Figure 5
5.3 Recommended Locations for Smoke Alarms and Locations to Avoid
5.3.1 Recommended Locations for Smoke Alarms
! Install at least one smoke alarm in every bedroom

Ningbo Kingdun Electronic Industry Co.,Ltd
Add：No.28 Fengyuan Road Economic Development Area ofYuyao City（South Zone）Ningbo Zhejiang
P.R. C h i n a 3 1 5 400 .
! If you install the smoke alarm in a passageway whose width is less than 3m,
install it in the middle and install one unit every 12m.
! At least 1.5m from fluorescent lamp or neon lamp. (In case of electronic
interference).
! At least 3m from the bathroom.
! At least 6m from the kitchen or stove.
! At least 30cm from the lamps.
! Locate the smoke alarm in the middle of the room. If you can’t, install it at
least 1m from the wall.
! If you install the smoke alarm on sloped or peaked ceiling, the installation
position shall be at least 90cm from the highest point.
5.3.2 Locations to Avoid
! In the garage. Products of combustion are present when you start your
automobile.
! Near fresh air vents, fans, air conditioner or other drafty areas.
! In dusty areas. Dust particles may cause nuisance alarm or failure to alarm.
The insect screen can only obstruct part of the insects or dust.
! Areas where have metallic shield that will block RF signal.
! In an area where the temperature may fall below 0℃ or rise above 40℃.
! In humid areas. Bathroom. Kitchen.
6. Function

Ningbo Kingdun Electronic Industry Co.,Ltd
Add：No.28 Fengyuan Road Economic Development Area ofYuyao City（South Zone）Ningbo Zhejiang
P.R. C h i n a 3 1 5 400 .
6.1 Learn to inter-connect
! Secure all the alarms that need to be interconnected to the mounting plate
and twist clockwise.
! Take one as master, press the LEARN button to green (the signal indicator
switch from red/green/none color).
! Take the second one as slave, press the LEARN button to red, then press
the TEST button of master one 1-2 seconds, the LED of the master start
flashing and then stop, meanwhile the slave one will receive the signal and
the red LED start flashing and later stop, which means these two
pieces have been inter-connected successfully.
NOTE: if you have some more pieces to be inter-connected into the same
system,repeat the last operation and connect them with the master one,
press LEARN button of the master into none color after all devices are
connected.
6.2 Test operation:
Press the TEST button of master and do not release (around 10 seconds)
until the slaves receive the signal and alarm together, the test operation has
been completed. When Press the TEST button of slave, the master will
receive the signal and alarm too.Then learning of interconnection is completed.
6.3 Delete memory:
Press the learn button to green state in some seconds, the LED
starts flashing means the memory is deleted.
Note1: All the smoke alarms of this model have wireless interconnection
function. It requires at least two smoke alarms. Within effective interlink
range, you can interconnect as many units as you want. We suggest you
learn the interconnection operation before you install the product to the
ceiling, to make your operation more efficient.
Note2: The interlink range of this product is
≥
100m (open field). But as

Ningbo Kingdun Electronic Industry Co.,Ltd
Add：No.28 Fengyuan Road Economic Development Area ofYuyao City（South Zone）Ningbo Zhejiang
P.R. C h i n a 3 1 5 400 .
different construction will have different effect on the transmission
distance, if there is product that cannot be interconnected, please adjust
the installation position of the product.
6.4 operating mode
! Testing
Press the TEST button and the product will enter alarm mode. It will make
beeps that are louder than 86dB. The alarm indicator (red) will flash.
! Standby condition
In standby condition, the smoke alarm detects every 10 seconds. The alarm
indicator flashes every 344 seconds to indicate that the smoke alarm is
operating properly. When it senses products of combustion, the alarm sounds.
And the alarm indicator (red) flashes at the same time, until the air is clear.
! Silence mode (Low sensitivity)
When it’s in alarm condition, press the TEST/HUSH button and the product
will enter silence mode. The alarm indicator flashes every 9 seconds and no
audible sound will be heard, unless smoke becomes denser. That will last for
about 9 minutes. Pressing the TEST/HUSH button again will end the silence
mode.
! Low voltage warning
When the battery voltage is too low, the product will make short beeps every
43 seconds to warn the user, until the battery voltage comply with the working
voltage of the smoke alarm.
! Alarm history
When the alarm indicator (green) flashes 3 times every 43 seconds, that
means alarm has been made. Please check if there is fire risk in detecting area.
This indication will end 24 hours later.
! Smoke chamber degeneration warning
The working environment and time will cause the degeneration of smoke
chamber. When the product makes 3 short beeps every 43 seconds, it
indicates end-of-unit-life. You should replace the smoke alarm with a new one.

Ningbo Kingdun Electronic Industry Co.,Ltd
Add：No.28 Fengyuan Road Economic Development Area ofYuyao City（South Zone）Ningbo Zhejiang
P.R. C h i n a 3 1 5 400 .
7. Maintenance
7.1 Test the smoke alarm every week by pressing the test button.
7.2 Clean the smoke alarm with dry cloth. Never use water, cleaners or
solvents to clean since they may damage the unit. Prevent foreign body from
entering the unit.
7.3 If the smoke alarm is not working properly, don’t disassemble the unit
yourself. Please seek the service of the professionals.
8. Points for Abandoned Products
8.1 The packing material is renewable, so please do your best to recycle it.
8.2 As this product has built-in non-replaceable battery, this unit cannot be
abandoned with normal household garbage.