Programmable battery low-voltage disconnector for DC12-36V lead-acid battery and lithium-ion battery. (Batteries are not included). Programmable Undervoltage Protection - When the battery reaches the set voltage, the module automatically disconnects the load to avoid over-discharging the battery, thereby extending the life of the battery. With switch-off protection - It saves the settings and parameters when switching off. Don't worry if the power suddenly goes out. LED display that shows the current voltage. Input voltage range: DC12-36V, control accuracy: 0.1V, power consumption: <1.5W, maximum current before triggering the switch: 20A.