RC Lipo battery low voltage buzzer alarm
This micro device can measure lipo from 7.4v to 11.1v (2s to 4s)， it will sound up to 95dB if your lipo cell voltage drop to 3.3v
It is also a good device for quick test for your lipo before flight， and it can use as inflight alarm if you not sure the maximum flight time.
The Alarm sounds and red lights to warn you when the battery voltage is too low.It can prevent your lipo battery damaged due to low voltage.

Package Include:
1 x Battery low voltage Alarm buzzer