Features 1.Control circuit with photoelectric isolation function can effectively protect the circuit board 2.1% high-accuracy voltage-dividing resistor, making measuring voltage more accurate 3.Voltage accuracy and resolution are 0.1V with calibration 4.Energy saving mode reduces the brightness of the digital tube display, saves energy and protects the eyes 5.Parameter save when power off, avoid duplicate setting 6.Set the starting discharge voltage (H) and cut-off discharge voltage (L) to the lowest (<6V), which can be used to measure 6-30V voltage 7.With energy saving mode and factory reset function Specification Item Type: Battery Discharge Protector Module Working Voltage: DC 6-30V Working Current (12V Power Supply): Standard mode, standby current 7MA; working current 11MA; Energy saving mode, standby current 4MA; working current 7MA Three control buttons, 4 digital tube display, 1 LED discharge indicator Mode State: Standard mode, energy saving mode, setting mode, voltage calibration, factory setting Can Give 6-30V Any Battery Discharge Protection, MOS Tube Maximum Load current: 15A (6-15V); 10A (15-30V) The default cut-off discharge voltage is 11.8V, and the start-up discharge voltage is 12.8V. Size: Approx. 60 x 35 x 16mm / 2.4 x 1.4 x 0.6in Weight: Approx. 20g /0.7oz Package List 1 x Battery Discharge Protector Module