Wireless 433/315 mhz home hydrogen sulphide CO gas detectors

1. Intelligently detects leakage of inflammable gas(LPG, coal gas, natural gas, and marsh gas, etc).
2. Temperature/Concentration indication on 4 digital tube displays.
3. Test power supply and circuit condition once a week
4. When external power is cut off, it will use the backup battery automatically, and display "PPPP" to alert.

5. Power:9~15VDC
6. Current:Static current <10mA
7. Smoke sensitivity: Suitable for UL 217 standard
8. Temperature:40°C~45°C
9. Humidity 10%~90%
10. Alarm voice: Within 10 inches can be 85 DB