Welcome to the store! Features: With start/stop function, the module enters infinite cycle mode after startup, and the relay works on and off according to the set time. Programmable battery low voltage disconnect switch for DC 12-36V lead-acid battery and lithium-ion battery. It is a protection module; batteries are not included. Built-in momentary push button to set the low voltage disconnect parameter and a 3-digit red LED display for easy operation. When the battery voltage reaches the set values, the module will automatically disconnect the load to prevent the battery from over-discharging, thus extending the battery's lifespan. The display is accurate, and the switch module opens and closes quickly when approaching the minimum voltage. Settings are stored non-volatilely, meaning they are retained even when the power is off. Specifications: Material: PCB Size: Approx. 5.7x4.2x1.9cm/2.24x1.65x0.74inch Power Consumption: 1.5W Input Voltage Range: for DC 12-36V - Control Accuracy: 0.1V - Compatible Battery: Lead-acid, Lithium-ion battery, Solar panel battery Note: 1. Please allow 1-2 cm errors due to manual measurement, ensure you don't mind before ordering. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you for your understanding. Package Includes: 1x Protection Module Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately, and we will provide you with the best solution!