Smoke Detector SD-202

It provides a full 10 years of protection without having to change the batteries.
Dustproof,mothproof and anti-white light interference
High density SMT design, high stability
One detects smoke will triger other connected smokedetectors
Detection range: 80m² at 6-12m installation height
60m² at installation height ＜ 6m
Transmit distance: ≤80m (open area), Sound level: 85dB/3m
Alarm type: Sound & Flash alarm/LED Indicating Alarm
With EN14604 CertificateProduct name：Wireless communication base
Wireless frequency：433Mhz
Wireless Base：2x3V replaceable
Power supply：batteries
Low voltage threshol：5.2V
Alarm mode：LED&buzzer