Features 1Industrial Grade Main Control Chip: High quality components enhance system performance the highest conversion efficiency is 98% ultra fast tracking speed to ensure tracking efficiency the controller is 12V/24V automatic identification compatible with 12V/24V system. 2Large Screen LCD Display: Adjustable charging and discharging parameters with power off memory function can clearly display status and data can easily switch modes and parameter configuration suitable for home industry business etc. 3Multiple Protection Functions: Built in over current short circuit protection open circuit protection reverse connection protection all of which are self healing and do not damage the controller. 4Charging Management: Complete 3 stage charging management to improve system efficiency and extend battery life. Dual USB output maximum current up to 25A supports mobile phone charging. 5Charge Controller Cooling: Dual MOS anti backflow circuit ultra low heat generation the charge controller will heat up during operation please pay attention to install the charge controller in a flat well ventilated place. 6Easy to Install and Operate: Charging controller should be connected to the battery first then the solar panel and finally the load. Disassembly sequence is opposite to the wiring sequence. Specification Item Type: LCD Screen Solar ControllerColor: OrangeWeight: Approx.155g/5.5ozMaterial: Shell Plastic + Back Plate IronProduct Size: Approx. 13.3x7x3.2cm/5.2x2.8x1.3inDisplay Mode: LCD ScreenApplicable Solar Panels: 12V is Suitable for 18V Solar Panels 24V is Suitable for 36V Solar PanelsStandby Current: <10MAWorking Temperature: -35 to 60USB Output: Dual USB Output 5V / 2.5A (Max)Light Controlled Turn On Threshold: Solar Panel 8V (Light On Delay)Light Controlled Turn Off Threshold: Solar Panel 8V (Light Off Delay) Package List 1 x Controller1 x Manual Note 1. Controller automatically recognizes 12V/24V. When installing for the first time please make sure that the battery has enough voltage so that the controller can recognize the correct battery type. In order to protect the service life of the battery once the battery voltage is lower than 8V the solar controller will automatically shut down.2. Install the controller as close to the battery as possible to avoid voltage drop caused by excessively long wires and affect the normal voltage judgment.3. Controller is only suitable for various lead acid batteries (including openings seals gels etc.) please do not use it for other batteries (including lithium batteries nickel hydrogen batteries etc.).4. Controller can only use photovoltaic panels as the charging source do not use DC or other power sources as the charging source.5. Controller will generate heat when it is running. The operating temperature of the controller is 35C to +60C. Please pay attention to install the controller on a flat well ventilated surface.6. LCD display of controller has an error of 0.2V0.3V but this is normal.7. The reverse order applies when unloading. An incorrect order may damage the controller. Please refer to the manual for specific use.