Product Description: SR-902 Main Features: Auto reset after alarm MCU process Sensor with high stability and low power consumption Detecting natural gas and LPG SMT adopted Technical specification: Operating voltage: AC 220V or DC 9-16V Standby current: less than 90mA or less than 30mA (low power consumption) Alarm current: less than 100mA or less than 40mA (low power consumption) Rated power: less than 3W (AC 220V) Operating temp.: -10 to +50 degrees Working humidity: less than 95%RH Alarm mode: network output / sound & flash alarm / RF Alarm volume: more than 85dB/m Alarm density: 10%LEL Alarm output: relay output (N.C.and N.O. optional) / RF signal Dimension: 70L*40W*110Hmm