1-8S Lipo/Li-ion/Fe Battery Voltage 2IN1 Tester Low Voltage Buzzer Alarm

Description:
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 model voltage range:3.7v-30v 
Low voltage alarm mode for 2-8S 
Alarm set value range: OFF 2.7-3.8V

Specification:
Size: 40mm x 25mm x 11mm
Original box: NO
Net weight: 9g

Place it on the helicopter, it will warn you when to land the helicopter . Very useful for all Helicopter flyers, able to use on 1-8s Li-Po Battery Pack. It will Buzz you with very loud noise when each cell is under 3.3V in loading mode, loud enough to alert you to land the helicopter asap.