When the Voltage is Below the Set Value,It Will Buzzer with Red LED Light,Pre-set Value 3.3V.Push Key which Can Change the Voltage Settings and Save
5PCS 1-8s Lipo Battery Voltage Tester, Low Voltage Alarm Mode for 2-8S, Function of Checking Your Lipo Cells Voltage
Voltage Display Function and Low Voltage Alarm Funtion(Note:When the voltage is lower than the alarm value, it will always ring.And when the product of the measured is unpluged, the alarm will stop.)
Super loud alarm that sound makes it easier to find your drone.
Package Contains 5 Voltage Checkers
Voltage Checker & Low Voltage Alarm All In One
Works on 1-8 Cell Lipo Batteries with JST-XH Balance Lead
Extra Loud Alarm!
Reads Individual Cell Voltage & Total Pack Voltage