The 2 in 1 and detectors are equipped with high-quality electrochemical sensors that boast remarkable sensitivity for detection. Keep your home and family peace with our , which also act as detectors.

Features:
The will emit four short beeps when carbon monoxide is detected and will emit continuous beeps when is detected. The will also emit continuos beeps when both and carbon monoxide are detected at the same . The red will flash while in mode.
"beep" every 30 seconds is an indication that the is low (need replacement) or the unit is malfunctioning.
Test button to verify that the unit is functioning correctly.
Green and red that indicate normal operation and status.
The unit will "beep" and green will flash once as .
3 digits LCD displayer is optional, Err on the LCD to indicate the unit is malfunctioning, Lb on the LCD to indicate it low and need replacement. 999ppm on the LCD to indicate level over 999ppm, if the leakage is less than 999ppm but over 30ppm, it would show its actual concentration.
Blue back will be lighted when pressing the test botton or alarming.

Specifications:
Material: ABS
: 9V alkaline 6LR61 or carbon zinc 6F22 (Not included)
Sensitivity Setting: : sensitivity &
                               50ppm, alarms with 60-90minutes 
                               100ppm, alarms with10-40minutes
                               300ppm, alarms with 3minutes
                               : 1%-5% / FT OBS
Standby Current: <100uA
Current: <75mA
Operation Ambient Condition: 5℃~40℃, 20~90%RH
Item Size: 113 * 113 * 35mm / 4.45 * 4.45 * 1.38in
Item Weight: 106g / 3.73oz
Package Weight: 148g / 5.22oz
Package Size: 12 * 12 * 4.5cm / 4.72 * 4.72 * 1.77in

Package List: E25227
1 * and
2 * Screws
2 * Anchor Plugs
1 * User Manual (English/German/French/Italian)