Dual Carbon Monoxide and Smoke Detector

High sensitive CO sensor.
Elegant design with LCD digital display.
85 decibel alarm.
Permanent carbon monoxide sensor.
The alarm will emit four short alarm beeps when Carbon Monoxide is detected and will emit continuous beeps when smoke is detected.
The alarm will also emit continuous beeps when both smoke and carbon monoxide are detected at the same time.
Green and red LED lights that indicate normal operation and alarm status.
Long service life sensor, low power consumption.

Sensitivity Setting:
CO: sensitivity & time
50ppm: alarms with 60-90 minutes
100ppm: alarms with 10-40 minutes
300ppm: alarms with 3 minutes
Smoke: 1%-5%/FT OBS
Standby current: <100uA
Alarm Current: <75mA
Operation Ambient Condition: 5-400C, 20-90% R.H.
Work with one 9V alkaline 6LR61 or carbon zinc battery 6F22 (not included)