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Photoelectronic Home Use Mini 10y Smart Smoke Alarm LM-109G

This is our most sale smoke detectors. It is used to detect smoldering smoke and
warn us to take proper measurement before a fire,it can increase the chance of escape by 50% , reduce the casualty rate and reduce losses from a fire.

Our product is with high sensitivity and stable function.Meanwhile it has local smoke alarm memory and hush function which can stop the false alarm immediately. They are all classic model and designed by big Test button for easy operation.
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  • LM-109G


  • 8531100000

Product Specifications:




















Technical parame- ters

Smoke detector


DC3V(built-in CP952434)

Low-voltage inspection





Working current

Quiescent current



Alarm loud- ness


Working temperature


Ambient humidity

≤95%RH(no condensation)











Status dis- play

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 about every 10 seconds, no alarm sound, automatically cancel low sensi- tivity detection about 9 minutes later



Alarm memory

LED (green) flashed 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 useful life


After working for 10 years, alarm sound is made, the buzzer buzzes 3 times about every 43 seconds


Low-voltage inspection

LED (red) flashes once, make “di” alarm sound about every 43 seconds

 Appearance and dimensionFigure 1







• In areas where ventilation and/or air conditioning systems are used is must be ensured that air movement does not affect the function of the smoke detector.

• Smoke detectors must be permanently fixed on the ceiling. Mounting instructions must be observed.

• Choose a mounting method that ensures a holding force of at least 20N in vertical direction.

• The smoke detector is designed for monitoring residential buildings or residential premises (not for industrial or commercial usage).

• A function test must be performed on each smoke detector after installation.

• The functionality of each installed smoke detector must be regularly checked and maintenance measures must be ensured. Perform function test 1 per week, clean every 3 months.

• Smoke detectors must be taken out of service at the latest after 10 years and replaced with a new device.


Mounting locations

Mounting locations for smoke detectors:

• Bedrooms, childrens rooms and corridors must be equipped (basic requirement) with smoke detec- tors.

• Always on the ceiling.

• 50 cm from the wall (or beam).

• If the room is subdivided by ceiling-high furniture etc., a smoke detector must be installed in each room partition.

• In rooms with a floor area 60m2, divided into ceiling boxes by beams or joists, the following ap- plies:

o In ceiling boxes bigger > 36m2 a smoke detector must be installed per ceiling box (see Fig- ure 1a).

o In ceiling boxes 36m2 and with ceiling slopes 20°as well as beams or joists with a height

0.2m, the individual ceiling boxes are not taken into account (see Fig 1.b). Install smoke detectors as centrally as possible in the room, in a ceiling box or on the joist.

o In these rooms have beams or ceiling joists with a height >0,2m, the smoke detector must be installed on a beam or girder, as centrally as possible in the room (see Fig c).

• In rooms with a floor area of >60m2, an additional smoke detector must be installed per 60m2.



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Our main products include different kinds of smoke alarms, carbon monoxide alarms, gas alarms,water alarms,intelligent wireless alarm system , and other home electronics.


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