Specification:
1. Bluetooth: 4.0
2. Power Source: 5VDC, max 500mA, USB type
3. CO Detect Range:50~1000ppm
4. Gas(CH4) Detect Range:500~10000ppm
4. Temperature Range: 0˚C to 40˚C
5. Humidity Range: 10%~95% relative humidity (RH)
6. Buzzer Built-in
7. Card read Function
8. Compliance with UL2034 & UL1484
9. Alarm:
    a. 1000ppm ~ 3000ppm → every 5 seconds to start the alarm sound once every 1 second
    b. > 3000ppm → long start alarm sound      
10. Size: 85mm x16mm x13mm

Applications:
Plug an AW-2003 into USB interface power adapter or power supply. An AW-2002 will start to detect the CO/Gas concentrations from your home environment. If the CO/Gas concentrations are higher than a standard UL2034/UL1484, the Buzzer will sound loudly. You can use a smart phone directly connects with AW-2003 via Bluetooth to get the CO/Gas situation, or add a cloud gateway (Model Number: AW-2000) or a cloud Wi-Fi BLE outlet (Model Number:AW-2111BT) to get the CO situation from the outdoors. Once an AW-2003 connects with the smart phone or Gateway (AW-2000/AW-2111BT) successfully, any abnormal state users will receive an email notification. The indoor Bluetooth wireless transmission distance range might depend on indoor environment.