Mute function
Entry Condition
• In the alarm state, if the concentration is lower than 50PPM, press the
test button (See fig 8), it will enter the alarm mute mode, the red LED
and the green LED will flash once every 10 seconds.
Fig 8
• After entering the silent mode, if you need to enter the alarm again, you
need to re-time the alarm generation time under different concentrations.
Exit Condition
• When the carbon monoxide concentration continues to be as low as
30 PPM, the mute mode is exited and the non-alarm standby mode is
entered.
• When the concentration rises and reaches the corresponding concen-
tration and time, it enters the alarm mode.
Alarm time and prompt
Alarm time
When the unit detects dangerous levels of CO, it will emit an alarm signal
along with flashing of red LED (See fig7). When the CO concentration
dropped to about 30ppm, the product will stop the alarm.
CO Concentration Alarm trigger time
30 ppm
50 ppm
100 ppm
300 ppm
14
Within 120 minutes
Within 60-90 minutes
Within 10-40 minutes
Within 3 minutes