1. Loud 85db alarm
2. Permanent carbon monoxide sensor
3. The red LED will flash while in alarm mode
4. Standby: Green Led flashes once every 30 seconds
5. Low-bat Indicator: Chirp every 30s as battery lower than 3.3V with green LED flashing and Lb on LCD
6. 3 digits LCD display
7. Power supply: 3 x AA batteries (not included)
8.Sensitivity & time: 50ppm, alarms within 60~90 minutes; 100ppm, alarms within 10~40 minutes; 3000ppm, alarms within 3 minutes
9. Standby current: Less than 50uA
10. Alarm current: Less than 50mA
