It preferred by Knowledgeable Model Hobbists & R/C Enthusiasts
Use for 1-8S Lipo/Li-ion/LiMn/Li-Fe
Voltage detection precision: +_0.01V.
Unit voltage display range: 0.5~4.5V
Total voltage display range: 0.5~36V
1S test mode voltage range: 3.7~30V
Low voltage alarm mode for 2-8S
Alarm set value range:OFF~2.7~3.8V
Size: 40mm x 25mm x 11mm
Gross Weight : about 16g
When the voltage is below the set value ,it will buzzer with red LED Light , pre-set value 3.3V .
Push key to can change the voltage settings and save.

Package include:
Low Voltage Buzzer x2