Features:  

* High sensitivity photoelectric smoke sensor

* Intelligent MCU control, low power consumption

* Battery powered, replaceable 9V battery operated

* High decibel on-site alarm sound, up to 85dB/1m 

* Fast response, sound and light alarm

* Self-test and mute button, and Low battery warning function

* Wireless 433.92MHz, working with home security alarm system

* Can be used as standalone smoke detector 

Specification:

Power: 1*9V 6F22 battery

Sensor: Infrared Photoelectric Sensor

Alarm Density: 0.1% db/m-9.9%db/m

Wireless frequency: 433.92MHz

Wireless coding: 1527

Alarm output: Sound, LED indication, wireless transmission   

Alarm sound level: 85dB/1m

Working temperature: -10°C~50°C

Working humidity: ≤95%RH