1、Using advanced sensor, high reliability, automatically reset after alarm. 2、Adopt MCU processing to automatically detect sensor failures, dependable to use. 3、With SMT designed, high stability, which has professional performance. 4、A perfect item for protecting your family from the dangers of ozone gas. 5、Wall‑mounted mounting method, easy to install, no need complicated tools, save time and effort. 1 x Gas Alarm  1 x Mounting Buckle 1 x Screw 1 x Screw Cap Condition: 100% Brand NewItem Type: Ozone Gas AlarmMaterial: PlasticColor: As picture shownQuiescent Current: ≦90mA≦30ma (Low Power Consumption Type)Alarm Current: ≦100ma≦40ma (Low Power Consumption Type)Rated Power: ≦3wWarm-up Time: About 180sAlarm Level: 100ppmAlarm Indicator: Red LED FlashesFault Indicator: Yellow LED On, Buzzer Long Beeps Sound Level: ≧85db / MWorking Temperature: -10-+50℃Environmental Humidity: ≦95%RH (No Condensation)Installation Method: Wall-mountedAlarm Output: Relay Output/Sound and Flash AlarmRadio Distance: 100m/ 328.1ft Open Area (Wireless Type)Executive Standard: GB 15322.2-2003