1、High Performance: Using industrial grade main control chip, high quality components to improve system performance, the highest conversion efficiency is up to 98%, ultra fast tracking speed to ensure tracking efficiency. The controller is 12V/24V automatic identification, compatible with 12V 24V system. 2、LCD Display: The controller has a large LCD display, and the charging and discharging parameters are adjustable. With power off memory function, the status and data can be clearly displayed, and the mode and parameter configuration can be easily switched. It is suitable for home, industry, and business. 3、Multiple Protection Functions: The controller's complete 3 stage charging management improves system efficiency and extends battery life. Built in multiple protection functions, over current, short circuit protection, open circuit protection, reverse connection protection, all of which are self recovery and do not damage the controller. 4、Input and Output: The controller has dual USB outputs, the maximum current is up to 25A, supports mobile phone charging, and uses dual for MOS anti backflow circuits with ultra low heat. The controller will heat up during operation, please pay attention to install the charge controller in a flat, well ventilated place. 5、Easy to Install and Operate: The charge controller should be connected to the battery first, then the solar panel, and finally the load! The disassembly sequence is opposite to the wiring sequence. Item Type: Solar Charge Controller Material: Shell Plastic + Back Plate Iron Product Color: Black Total Length: Approx. 13.3cm / 5.2in Total Width: Approx. 7cm / 2.8in Total Width: Approx. 3.2cm / 1.3in Display Length: Approx. 12.6cm / 5.0in Display Width: Approx. 5cm / 2.0in Product Weight: Approx. 157g / 5.5oz Display Mode: LCD Screen Voltage: 12V / 24V Automatic Identification Applicable Solar Panels: 12V is suitable for 18V solar panels, 24V is suitable for 36V solar panels Maximum Photovoltaic Voltage: 12V battery, up to 23V; 24V battery, up to 46V (up to 50V under no load) Full Cut Off Voltage: 14.4 / 28.8V Discharge Cut Off Voltage: 10.7 / 21.4V Discharge Recovery Voltage: 12.6 / 25.2V Charging Recovery Voltage: 13.2V / 26.4V Light Controlled Turn On Threshold: Solar Panel 8V (light on delay) Light-controlled Turn Off Threshold: Solar Panel 8V (light on delay) Standby Current: ＜10MA USB Output: Dual USB Output, 5V / 2.5A（MAX） Working Temperature: -35℃ to 60℃ 1 x Controller 1 x Manual