How to Use: 1. Connect the positive and negative poles of the battery to the controller, and the controller will automatically detect the battery voltage. 2. Connect the positive and negative poles of the load to the controller, and be careful not to reverse the connection. 3. Connect the solar panel to the controller. 4. Please connect in strict accordance with the above sequence, otherwise the controller will be damaged, and the disassembly sequence is opposite to the wiring sequence. (please refer to the detail diagram for details) Specification: Item Type: Solar Charge Controller Material: ABS Weight: Approx. 166g / 5.8oz System Voltage: 12 24V Adaptive Standby Current: ＜10mA Usb Output: 5V 2A(max) Purpose: Solar Street Lamp, Inverter Or Monitoring Equipment, Etc Solar Panel Voltage: 12V, 18V, 24V, 36V Solar Panel Floating Charge Voltage: 13.7V (Default, Adjustment Table) Discharge Cut Off Voltage: 10.7V (Default, Adjustment Table) Discharge Recovery Voltage: 12.6V (Default, Adjustment Table) Package List: 1 x Solar Charge Controller1 x Manual