1、High reliability sensor, automatic reset after alarm, warm‑up time about 180 seconds. 2、Using MCU processing, automatic detection of sensor fault, wall mounted installation. 3、SMT designs, high stability, this gas alarm will flashing red LED light when it detects. 4、The detector adopts the electrochemical sensor, which gives a quick and accurate measurement. 5、Can continuously monitor O2 gas concentration accurately in the surrounding environment. 1 x Gas Alarm1 x Installation Buckle2 x Screw2 x Screw Cover Condition: 100% Brand NewItem Type: Oxygen Gas AlarmMaterial: Plastic Plug: EU Voltage: 220V Static Current: ≦90mA≦30mA (Low power consumption)Alarm Current: ≦100mA≦40mA (Low power consumption)Rated Power: ≦3WWarm-Up Time: About 180 secondsAlarm Level: 19%vol Hypoxia alarm 23% VOL oxygen leakage (either option)Alarm Indicator: Red LED flashesFault Indicator: Yellow LED bright, buzzer longSound Level: ≥ 85dB/mOperating Temperature: -10 ~ + 50℃Environmental Humidity: ≦95%RH (no condensation)Installation: Wall mountedAlarm Output: Relay output/sound and flash alarmsRadio Distance: 100m open area (wireless type)Standard: GB 15322.2-2003