AC powered gas alarm 1.Semiconductor sensor 2.Power Supply: AC110/220 3.Comply EN50194 4.Fault signal, low battery warning, Stand-alone GAS Alarm from PEASAWY.COM 1.Sensor Type: semiconductor sensor 2.Power Supply: 12-24VDC 3.Standby Current: 10uA 4.Alarm Current: 23mA 5.Operation Temperature: 0°- 50° 6.Low battery warning 7.Self-Test Button to verify operation 8.Silence function with dual led indicator 9.Sensitivity meets EN50194 10.Alarm Sound Level: >85dB at 10 feet (3m) 11.Easy to install, move and maintain