Feature:
1. The alarm will emit four short alarm beeps when Carbon Monoxide is detected and will emit continuous beeps when smoke is detected.
2. The alarm will also emit continuous beeps when both smoke and carbon monoxide are detected at the same time.
3. Advanced level of protection, easy to read with the display, even in low light conditions.
4. CO Carbon Monoxide Poisoning Gas Sensor Warning Alarm Detector Tester LCD.
5. A perfect item for protecting your family from the dangers of carbon monoxide.
6. Green and red LED lights that indicate normal operation and alarm status.
7. Displays the level of carbon monoxide the unit is sensing.
8. Long service life sensor,low power consumption.
9. Permanent carbon monoxide sensor.
10. Loud 85 decibel alarm.

Specification:

Instruction:
After install batteries,Emit a sound and the red light flash quickly and LED display 888 Pppm mean battery installed correctly,the green flash every 30 seconds to screen out,showed a concentration when the concentration of more than 30 PPM.No show below 30 PPM.Test botton to verify that unit is functioning correctly.One 'beep' every seconds is an indication that the battery is low or the unit is malfunctioning.The last alarm value will be record and display when press the button,the green light will flash once eveyr second.Press button again to reset condition.

Note:
1. Please allow a bit error due to manual measurement. please make sure you do not mind before you bid.
2. The color may have different as the difference display, please understand.

Package Included: