Combustible Gas Alarm

we are offering combustible gas alarm.
1. model: ak-200fcq2
2. sensor:japanese electrochemistry sensor
3. agent query function
4. alarm record query function
5. smart voice alarm and digital display
6. alarm point settings
7. concentration unit conversion
8. suitable gas: natural gas
9. measure range: 0-50kppm �0-100%le �
10. display range: 0.8-30.0kppm �1.6-60%lel�
11. concentration alarm: 5.0kppm (10%lel )
12. alarm point set : 19.9kppm � 2-19.8%lel�
13. working environment: 0-60� �95%rh
14. input power : ac220v
15. static power: �1.2w
16. alarm power: �3w
17. response time: �30 second
18. alarm sound: �80 decibel (within 1m)
19. gas sensor: service life for 5 years