Such as anti-plugs inserted, the our monitor will not have any response,

reverse and re-plug in .
 
our monitor once connect with power all the LED indicator light blinks three times,
At the same time buzzer sounded three times to check whether the board is normal .
 
When the battery voltage is normal( ok status) lights green always, red lights extinguished.
When the battery voltage higher than the 4.25 v, the green light extinguish , red light flashing,
buzzer Issued urgent warning buzzer sound.

When the battery voltage is lower than the corresponding 3.6 v , the green light is off, flashing red light,
When a voltage is lower than the 3.3 v, the corresponding green light is off, flashing red light, buzzer issued a buzzer sound.
The monitor alarm board voltage detection accuracy of ± 1%.
monitor Alarm board will consume certain currents when it is working,
So when you do not use the battery , take the monitor out from the battery.