Gas Carbon Monoxide Detector Sensor Unit LCD CO Safety Alarm Tester, CO999

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