... with wet cloth.3. Keep children away from controller!4. Keep controller away from electrical heater, warmer and avoid ... , Output voltage, Frequency, Socket type, Protection functions(Low battery voltage, over battery voltage, lack-voltage alarm. Protections:short circuit, overload, ... as possible, including DHL, UPS, TNT, Fedex and EMS. 2.4KW 48V Solar Charger Controller, PWM 50A Solar Controller