Sun YOBA Solar Charge Controller Solar Controller 10A 12V 24V with USB Port CMTD series solar charge controller is a kind of intelligent, multi-functional solar charge and discharge controller. All the controlling parameters can be reset flexibly to satisfy your different needs. Intelligent PWM charge mode, automatic identification system voltage level, 12V 24V auto switch. Visual LCD graphic symbol . Brief key operation. Adjustable charge-discharge control parameters. Settable operating modes of loads. Multiple selection of battery. With Dual USB 5V output. Various protection: Battery over temperature protectio; Battery low voltage protection ; Battery reverses polarity protection; Overload & short circuit protection.