Lipo Battery Voltage Tester, Low Voltage Alarm Mode for 2-8S, Function of Checking Your Lipo Cells Voltage Use for 1-8s Lipo/Li-ion/LiMn/Li-Fe, the Lipo Battery Meter Automatic Protects Against Reverse Connection, RC Low Voltage Buzzer Alarm, Battery Monitor Checker Tester LED Voltage Display Function, Lipo Battery Voltage Tester Clearly Display the Value of Battery Cell Voltages, Total Voltages, Lowest Cell Voltage, Remaining Battery Capacity, and Low Voltage Alarm Funtion Protect the Battery from Overcharging or Overdischarging, Test the working state of lithium battery When the Voltage is Below the Set Value, the Battery Voltage Tester Keep Buzzing with Red LED Light.the default Pre-set Value 3.3V. Push Key on Top Can Change the Alarm Voltage Settings and Save note: Random words, Cannot be chosen the specific words. Material: plastic colour: Black Red Package Contents: 5 x Lipo Battery Voltage Tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.