LiPo Alarm Buzzer

This micro device can measure o from 7.4v to 11.1v (2s to 3s), it will sound up to 95dB if your o cell voltage drop to 3.3v

It is also a good device for quick test for your o 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 o battery damaged due to low voltage

Size: 39 x 19 x 8 mm. Can be used with 2 and 3 cell LiPo batteries (7.4V and 11.1V)