1、PWM Charging Technology: Solar controller adopts the three stage PWM charging technology of strong charging, constant voltage charging and floating charging, which can ensure the battery is fully charged quickly and safely. 2、Long Life: PWM solar charge controller has a longer battery life than the traditional switching type charging. 3、Upgraded Design: Solar controller is a new generation of intelligent solar charge and discharge control system, which adopts industrial grade product reliability design and has super stability. 4、LED Indicator Light: Solar panel controller adopts three LED lights for status display, which can clearly understand the operation status of the system. 5、Safety Protection: PWM solar charge controller has over voltage, short circuit, overload, overcharge and over discharge protection functions. 1 x Solar Charge Controller 1 x Manual Item Type: Solar Charge ControllerMaterial: ABSSize: Approx. 11.5x 10.5x4cm / 4.5x 4.1x 1.6in Maximum Solar Panel Power: 175WMaximum Solar Panel Voltage: 30VMaximum Charging Current: 10ABattery Voltage: 12VBattery Type: Plumbic Acid, Ternary Lithium, Lithium Iron Phosphate (Can Choose One of Them)Charging Technology: PWMUse: Solar Controller