Household Gas Leak Alarm System, Certification : CE, CCC approved

We are offering household gas leak alarm system.
specifications:
(gas alarm system with multi alarm outputs sfl-817)
1. Mcu control high stability
2. Power supply type for optional
3. Ce, ccc approved
4. Independence/network for optional
5. Sensor type: new nano-technology sensors, long life
6. Sensor: gas, natural gas, coal, lpg
7. Working voltage: dc12v/ac220v for optional
8. Working current: less than 150ma
9. Operating temperature: -10 to _50 degrees
10. Operating humidity: less than 97%
11. Alarm volume: 70db/1m
12. Response time: 20s
13. Alarm output: live sound and light alarm
14. Ceiling mounted/wall mounted for optional, easy installation and exquisite design
15. Dimension: 110*70*41mm
16. No/nc for optional
working principle:
to remind or contain gas leak quickly when leaked gas reaches the alarm concentration
application: gas fitting, gas leak controller can integrate it easily.