Carbon Monoxide Alarm LCD Display Detector Fire Sound Alarm

DescriptionProduct Name: Carbon Monoxide AlarmColour: WhitePower supply: 3 x 5 batteries (product does not contain batteries)Operating range:Humidity 4℃~38℃Alarm sound:85DB(3m)Low alarm: "ki" sound every 30 seconds, LED display: LbRated voltage:220V 50HZAlarm concentration:50PPM.60-90min:100PPM.10-40min:300PPM. 3minStatic indication:Green LED flashes once every 30 secondsProduct Size:Diameter:100mm * 38mmApplication:Applicable to all kinds of heating coal stoves, coal and carbon burning equipment, gas water heaters, gas cooking equipment, etc. generated by the gas (carbon monoxide detection) monitoring and alarmInstallation and use:Installed in the room to be detected 30 cm below the ceiling, or on the ceiling.The installation position should not be too close to the gas stove or hood to avoid fumes entering the alarm directly, otherwise it will affect the sensitivity of the alarm.*This product are manually measured, if there is a slight error, please understand, does not affect the use, wish you happy shopping!*Products because of the shooting light and angle problems and different screens, if there is a color difference, please understandAlarm current:80mA quiescent current: