Feature: 1. Voltage Automatic Identification: 12V 24V automatic identification, designed with user friendly LCD display and double button operation man machine interface, easy to use. 2. Simple to Use: The solar charge controller usually have a straightforward control panel that is easy to use and configure without excessive technical knowledge. 3. Protect the Battery: The solar controller can effectively protect the solar cell, avoid problems such as overcharge and overdischarge, and prolong the battery life. 4. Multiple Protection: The solar controller has electronic short circuit protection, overcurrent protection, reverse connection protection, overcharge protection, etc., to ensure the stability and safety of the system. 5. For Sealed Battery: The regulator is only suitable for sealed batteries: OPEN, AGM, GEL, not for nickel metal hydride, lithium ion or other batteries. Specification: Item Type: Solar Charge Controller Material: ABS Color: Blue Battery Voltage: 12V/24V Automatic Maximum Solar Input: 12V Battery Up To 23V: 24V Battery Up To 46V Equilibrium: 14.4V Floating Charge: 13.7V (Default, Adjustable) Discharge Stop: 10.7V (Default, Adjustable) Discharge Reconnection: 12.6V (Default, Adjustable) Charge and Connect Again: 13V Turn On Voltage: Solar Panel 8V (Turn On Delay) Turn Off Voltage: Solar Panel 8V (Turn Off Delay) USB Output: 2 USB Outputs, 5V/2.5A (Maximum) Self Consume: < 10mA Working Temperature: -35-+ 60℃ System Connection: 1. Connect the battery to the charge regulator positive and negative. 2. Connect the PV module to the positive and negative ends of the voltage regulator. 3. Connect to the charging regulator positive and negative. When uninstalling, the order is reversed! Incorrect order may damage the controller!. Package List: 1 x Solar Charge Controller1 x Manual Note: 1. Make sure your battery has enough voltage for the controller to identify the battery type before first installation.2. The battery cable should be as short as possible to minimize loss.3. The regulator is only suitable for sealed batteries: OPEN, AGM, GEL, not for nickel metal hydride, lithium ion or other batteries.4. The charge regulator is only suitable for regulating solar modules. Do not connect other charging power sources to the charge regulator.