Features: Product parametersXH-M609 battery over-discharge protection module has an input voltage of DC6V-30V, voltage control accuracy of 0.1V, power consumption <1.5W, product size 57*42*19mm/2.24*1.65*0.75inch, including 2pcs. Battery protectionThe XH-M609 module has an accurate voltage monitoring function, which can detect the battery voltage in time, with overcharge, overdischarge, short circuit and overcurrent protection. When the battery is under-voltage or under-charged, it will automatically disconnect to prevent damage caused by over-discharging the battery. Reset operationWhen the power is off, press and hold both buttons at the same time, then power on, the screen will show "888" to indicate the successful restoration of factory settings, the factory set protection value is 12V, the difference is 2V. Automatic disconnectionWhen the battery voltage reaches the set value, the module automatically disconnects the load to avoid over-discharging the battery and extend the battery life. Multiple applicationsThe XH-M609 voltage protection module is suitable for all types of batteries, including lithium and lead-acid batteries, which is widely used in wireless devices, power tools, electric vehicles and other applications. Specifications: Input Voltage Range: DC12-36V Control Accuracy: 0.1V Compatible Battery: lead-acid, lithium-ion battery, solar panel battery Board Size: 57 X 42 X 19mm/2.24 X 1.65 X 0.75inch(L*W*H) Setting Example: Stop below 11V, a voltage higher than 11.6V start. Long press + screen slave flashing is set to 11, then long-press - screen flashing set to 0.6 is OK. Is it lower than 12.5V and the voltage is higher than 14.8V. Long press + screen flashing to set the stop value to 12.5, wait for the screen to not flash, press and hold - the screen flashes, set the hysteresis voltage to 2.3V. Package Included: 2x Battery Low Voltage cut off On Switch Protection Controller