1.1-8S Battery Voltage Tester Low Voltage Buzzer Alarm 2.Use for 1-8S Lipo/Li-ion/LiMn/Li-Fe 3.Size: 40mm x 25mm x 11mm Description:When the voltage is below the set value,it will buzzer with red LED Light, pre-set value 3.3VPush key whice can change the voltage settings and save.Product name: Low Voltage Buzzer AlarmUse for 1-8S Lipo/Li-ion/LiMn/Li-FeVoltage detection precision: +_0.01VUnit ...