Home Fire Security Alarm System Wireless 433MHz 9V Battery Powered Smoke Detector Alarm Features: High sensitivity photoelectric smoke sensor Intelligent MCU control, low power consumption 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 as well Product name Wireless Smoke Alarm Detector Sensor Infrared photoelectric sensor Power supply DC 9V Battery 9V battery 6LR61*1 (NOT INCLUDED) Standby current ＜10uA Working current ＜100mA Alarm sound level 85dB/1m Low battery warning ＜2.2V 0.2V Detect area 60㎡ @ installation height ＜6m Wireless frequency 433.92MHz Transmission distrance 80-120m @ open area Working temperature -10℃~50℃ Working humidity ≤95%RH Features Low battery warning, Self test and mute function Size 106*106*41.5mm
