Wireless Small Fire Alarm Sound Smoke Sensor with CE and 90dB

Specifications

Alarm Smoke sensor(CE)
Smoke detector, fire detector, fire alarm
9V spare replaceable battery,
High Density SMT Design

Alarm smoke sensor with CE certification ,

Test function & Low voltage alarm function

Features:
1) Power source: DC 9V, AC 220V, DC 9V and AC 220V
2) Working current: : Surveillant current<15?, alarm current: <30mA
3) Alarm sound: >85dB
4) Ambient temperature: -10 ~ 50 centigrade
5) Low battery alert: 7 days
6) Can be used separately as well as in combination of up to 40 items