Complete wireless home security system combustible gas leakage alarm. It makes loud sound alarm and send wireless alarm notification to alarm control panel. The app alarm control panel will pop up notification on smartphone.
Suitable for using at home or hotel etc.
Features:
1. With English voice for operation prompt.
2. With AC power and built-in backup battery (for optional)
3. With LCD displayer of gas density.
4. Self check of the sensor.
5. Wireless sending of alarm signal.
6. Relay contact output to connect with valve or manipulator to shut off gas source.

Specification:

Power supply: AC 100V~240V 50-60Hz

Built-in backup battery: 9V NI-MH rechargeable battery (optional not included in standard package)

alarm density: 2500PPM(±1500PPM)

alarm time: Keep alarm when density more than 2500PPM

Wireless emitting frequency: 433MHz+hop frequency

wireless emitting distance: 300m
https://www.vedardalarm.com/gas-alarm-kitchen-room-security-wireless-alarm-system-hb-brand-p-242
dimension: 99x153x46(mm)