Features 1PWM Charging: This solar charge and discharge controller uses system voltage level automatic identification intelligent PWM charging method. 2Double Button Operation: With double button design makes the operation easier and the parameter adjustment is more convenient. 3Large Display Screen: The large display screen can be seen more clearly including digital display voltage current load identification battery power identification charging identification etc. 4Protection: Solar charge controller built in charge and discharge safety hours accumulation battery reverse discharge battery under voltage battery reverse connection overload short circuit protection. 5Dual USB Port: Made of ABS material dual USB ports more comprehensive output in line with the needs of various electronic products you can use it with confidence. Specification Item Type: Solar Charge ControllerMaterial: ABSProduct Size: Approx. 167 x 90 x 35 mm / 6.6 x 3.5 x 1.4 inCharging Mode: PWMWorking Temperature: -35~+60Waterproof Level: IP32Support Battery Type: Lead acid batteryFeature: Without power storage functionWeight: Approx. 282g / 9.9oz Package List 1 x Controller1 x English Manual