LingSY 2 in 1 RC Lipo Battery Monitor Alarm Tester Checker Low Voltage Buzzer Alarm with LED Indicator for 1-8S Lipo Life LiMn Li-ion Battery Indicator for RC Helicopter Quadcopter 2Pcs;

Features and Specifications
Using for the testing of 1S-8S lithium battery
Voltage detection precision: about 0.01V
Group voltage range: 0.5V~4.5V
Total voltage range: 0.5V~36v
1S-8S Buzzer alarm patterns in low voltage
Setting range of low-voltage alarm: OFF~2.7V~3.8V
Package weight: 22g

Usage:
★When the voltage is below the set value, it will buzzer with red LED Light.
Push key whith can change the voltage settings and save.

★What it shows on the LED Indicator when it lights at the begining:
1.All voltage of the battery
2.The voltage of the first cell
3.The voltage of the second cell
4...... till the last cell.
5.Back the the all voltage of the battery, and repeat again.

Package includes:
2pcs 2 in 1 RC 1-8s battery tester with low voltage buzzer alarm and LED indicator