12V/24V HD LCD Auto Work Solar Charge Controller PWM Dual USB Output Solar Cell Panel Charger Regulator Descriptions: This controller is a 12V / 24V automatic solar controller, the first installation, make sure that the battery has enough voltage, so that the controller can correctly identify the type of battery. Features: The large screen LCD shows that the parameters of charging and discharging can be adjusted. Complete 3 stage PWM charging management. Built-in over-current/short-circuit protection, open-circuit protection, reverse protection, are automatic recovery type, do not damage the controller. Double MOS anti backflow circuit has extremely low calorific value. Specifications: Material: PC Size: 149*78*35mm/5.87*3.07*1.38 #34; Weight: 120g Adaptive voltage: 12V/24 V Current: 30A Functions: LCD display; dual USB charging interface; power display; voltage display; charging and discharging parameters can be adjusted; optical control + delay can be adjusted;