Specifications:
Sensor type: Electrochemical carbon monoxide sensor
Battery Supply: 3* AAA size 1.5V batteries (not included)
Display: LED digital display
Alarm Indication: LCD display, sound and light tips
Standby Current:
Alarm Current:
Alarm tone: 85 decibels
Operation Ambient Condition:-10~ +55°C, ≤95%R.H.
Detecting Level Range: 0~999PPM
Error: +/- 3PPM

Working state:

1. When the alarm is in the off-screen state, the green LED flashes once every 30 seconds, indicating that the alarm is in a normal state.

2. When the alarm detects CO concentration over 50PPM, the LCD screen lights up, indicating that the alarm has entered the alarm state.

3. When the alarm detects CO in the range of 50-99PPM,the device will alarm within 60-90 minutes,when the CO concentration is in the range of 100-299 PPM,the device will alarm within 10-40 minutes,when the CO concentration ≥300PPM, the device will alarm immediately.

LCD screen display instructions:
‘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 50ppm, it would show its actual concentration.

Package Include:

2 x Carbon Monoxide Alarm
4 x Screws
1 x User Manual