Portable Gas Leak Alarm

we are offering portable gas leak alarm.
1. alarm peak query function
2. alarm point setting function
3. super-smart voice function 4. concentration unit conversion
5. suitable gas: natural gas
6. concentration alarm: 1-25%lel �500-12500ppm�
7. alarm set: 0.5-9.9kppm or 1.0-19.8%lel
8. input power: 3.7v 2600mah lithium battery
9. static current: �200ma
10. alarm current: �500ma
11. response time: �30 second
12. alarm sound: �80 decibel (from 1m)
13. sensor:japanese electrochemistry sensor
14. agent query function
15. alarm peak query function
16. smart voice alarm and digital display
17. alarm point settings
18. concentration unit conversion