Specification : 
Operate voltage : 16.5V-25.2V 
Power consumption current : 0.96mA
Operate temperature : -20 ~ +85 Degree C 
Dimension : 40 mm x 20 mm
Weight : 7 +- 1g

a. Intelligent voltage detection
b. Simple installation, operation. Operate with light signal indication. Recognize if the setting mode is 
    correct by return of beep sound after completing setting
c. Selectable low voltage detection for 5-cell, 6-cell Li-Po battery packs
d. Dual (light signal,alarm ) low voltage warning, easy to know the batteries state