Combustible Gas Alarm Controller

Model No.: JB-QGL-SJ3020 Combustible Gas Alarm Controller
Operating Environment: Temperature: 0℃ ~ +40℃; Ambient Humidity ≤95% (40℃±2℃, non-condensing)
Operating Voltage: AC220V±20%
Backup Battery: 2 × DC12V/7AH maintenance-free storage batteries
Bus Length: ≤1000 meters
Applicable Standard: GB 16808-2008 Combustible Gas Alarm Controllers