1) Power Supply : 3*1.5V AA batteries

2) Sensor: Electrochemical CO sensor

3)Alarm Style :Per EN50291

4) Sensitivity/Alarm Time: 

  Within 60~90 minutes  50ppm CO concentration; 

  Within 10~40 minutes  100ppm CO concentration; 

  Within 3 minutes  300ppm CO concentration

5) LCD Displayer(optional): 3 digits LCD displayer

6) Audibility: 85dB ( at 1m distance ),

7) 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,

8) Low-bat Indicator :

  Chirp every 30s as battery lower than 3.3V with green LED flashing and Lb on LCD

9) Malfunction Indicator :Chirp every 30s with green LED out and Err on LCD

10) Power consumption :0.3mW

11) Sensor Life: 3 years

12) Operation ambient: 0 ~ 40, 20% ~ 90%RH

13) Mounting: Wall/Ceiling mounting

14) Dimension 100mm*40mm, Weight: 0.2kg