1. Semiconductor gas sensor
2. MCU processing
3. Auto-check sensor failure
4. Auto reset after gas clears
5. Sound & flash alarm
6. 12V pulse output to drive solenoid valve / electrovalve to shut off gas supply
7. Relay output to drive exhaust fan to clear leaked gas
8. 24 hours aging tests of both PCBA and finished detectors to make it very stable
9. Double tests with gas when after two times of aging to make it very stable

Technical specification:
Operating voltage:    DC12-24V
Detecting gas type:    Natural gas&LPG
Alarm output:    Relay output&Sound &LED flash alarm
Drivable accessories:    Solenoid valve or Exhaust Fan
Rated power:    2.5W
Alarm level:    Natural gas:10%±5% LEL
Sound level:    ≥75dB/m
Installation:    Wall mounted
Working environment:      -10ºC~+50ºC(≤95%RH No congelation)
Dimension:    115*73*45mm