SUNSHINE SOLAR 1 x Single Charge Controller - 20A 12v/24v. This Sunshine Solar Controller features the latest PWM charge regulation for reliable and economical battery charge control. Bluetooth adapter required to enable Bluetooth. Specifications: Rated Charging Current: 20 amps. Rated Load current Ie: 20 amps. Maximum Solar Input Power: 240 Watts @ 12V - 480 Watts @ 24 Volts. Over load, short circuit Protection: 1.25 times of Ie for 60secs 1.5 times of Ie for 5secs. Overload protection: = 3 times of Ie short circuit protection. Self-consumption: = 6mA. System voltage: 12/24V. Auto-set. Work temperature: Industrial (l series):-35? to +55?. Charging Circuit Voltage Drop: = 0.26mA. Discharging circuit voltage drop: = 0.15mA. Regulation point: 14.4 V 12 volt working; 28.80 24 volt working. Low voltage disconnect: 11.1 V 12 volt working; 22.20 24 volt working. Low voltage reconnect: 13.1 V 12 volt working; 26.10 24 volt working. Temperature compensation: 0-10mV/?C/2V. Control mode: PWM charging. Dimensions: 153mm x 76mm x 37mm. Features: Microcontroller digital accuracy. Type of Charging Series PWM & state of charge(SOC). 4 Stages: equalization, PWM, Boost and Float, temperature compensated charging. Electronic protections Short circuit and over current-solar and load. Reverse polarity-solar, load and battery. Reverse current at night. Limits high voltage to protect loads. Lighting protection. Tropicalization Conformal coated printed circuit board. Terminals For wire sizes to 6mm?. Optional Remote meter and temperature sensor can be purchased for this product.