Description: 1) Alarm mode: Give an alarm warning while Alarm density reaches:
Coal gas: 1000~5000ppm, LGP: 1000~5000ppm, natural gas:
1000ppm~5000ppm 2) Working mode: independent & compatible mode: work solely at
party , room etc. work with our burglar alarm panel, so the alarm panel automatically
dial up the alarm phone. 3) siren:>90db 4) strict method with good quality Specification: 1. Operating Voltage:AC220V, or AC110V; DC12~20V 2. Working temperature: -10degree~50 degree 3. Alarm density: Coal gas: 2000ppm+/- 30% , natural gas:
2000ppm+/-30% , Liquid petroleum gas: 5000ppm+/-30% , 5. Operating Frequency: 433 MHZ/315MHZ (optional) 4. Responding time: less than 2 seconds 6. Net Weight: 0.2kg 7. Size: 115mm(L) ¡71mm(W) ¡43mm(H)