Main Feature: ◆ auto reset after alarm ◆ CPU process ◆ Sensor with high stability ◆ Auto check and indication for malfunction ◆ Detecting natural gas and LPG ◆ SMT adopted ◆ Supports Exhaust Fan Technology parameter: Operating voltage: AC 220V or DC 9-16V Standby current: ≤90mA or ≤30mA (low power consumption) Alarm current: ≤100mA or ≤40mA (low power consumption) Rated power: ≤3W (AC 220V) Operating temp.: -10℃～+50℃ Working humidity: ≤95%RH Alarm mode: network output / sound & flash alarm Alarm volume: ≥85dB/m Alarm density: 10%LEL (?%LEL) Alarm output: relay output (N.C.) Dimension: 70L*40W*110Hmm