Combustible gas detector fire alarm wireless sensor

CPU processor intelligent sensor for special combustible gas with long life detect methane and other flammable gas
with self-inspection function
Can use programmer to set address
Technical parameter:
detect gas type: methane
Alarm point: 7%LEL
working voltage: AC 220V
rate power:<=1.2W
response time:<=30s
transmission power >=7dB
alarm sound 115dB (within 1m)
Size (mm): 70*110*40