Features:

LCD displayer with a blue back ground light.

Loud 85 decibel alarm.

Permanent carbon monoxide sensor.

Powered by one 9V battery.

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 continuos beeps when both smoke and carbon monoxide are detected at the same time. The red LED will flash while in alarm mode.

One "beep" every 30 seconds is an indication that the battery is low(need replacement) or the unit is malfunctioning.

Test button to verify that the unit is functioning correctly.

Green and red LED lights that indicate normal operation and alarm status.

The unit will "beep"and green LED will flash once as power up.

3 digits LCD displayer is optional, Err on the LCD to indicate the unit is malfunctioning, Lb on the LCD to indicate it low battery and need replacement. 999ppm on the LCD to indicate CO level over 999ppm, if the Co leakage is less than 999ppm but over 30ppm, it would show its actual concentration.

Blue back light will be lighted when pressing the test botton or alarming.

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Specification:

Power Supply: one 9V alkaline 6LR61 or carbon zinc battery 6F22

Sensitivity Setting:

CO: sensitivity&time

50ppm, alarms with 60-90minutes/ 100ppm, alarms with10-40minutes

300ppm, alarms with 3minutes

SMOKE: 1%-5%/FT OBS

Standby current: <100UA

Alarm Current: <75MA

Operation Ambient Condition: 5-40??/span>,20-90%RH

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Package included:

1 x Carbon Monoxide & Smoke Alarm

1 x Manual
1 x Screw Kit

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