* Power Supply : 3*1.5V AA batteries* Sensor: Electrochemical CO sensor* Alarm Style :Per EN50291* Sensitivity/Alarm Time: Within 60~90 minutes @ 50ppm CO concentration; Within 10~40 minutes @ 100ppm CO concentration; Within 3 minutes @ 300ppm CO concentration* LCD Displayer(optional): 3 digits LCD displayer* Audibility: 85dB ( at 1m distance ), Frequency 3±0.5KHZ* Led Indication /Sound Pattern : Standby: Green Led flashes once every 30 seconds Alarm: Red Led quickly flashes 4 times with unit chirping every 5 seconds, then repeat,* Low-bat Indicator : Chirp every 30s as battery lower than 3.3V with green LED flashing and Lb on LCD* Malfunction Indicator :Chirp every 30s with green LED out and Err on LCD* Power consumption :0.3mW* Sensor Life: 3 years* Operation ambient: 0 ~ 40, 20% ~ 90%RH* Mounting: Wall/Ceiling mounting* Dimension 100mm*40mm, Weight: 0.2kg
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