www.amazon.com Regulations point: 14.4 Volts; Low voltage Disconnect: 11.1V Volts; Low voltage Reconnect: 13.1 Volts; Microcontroller digital accuracy; Type οf Charging: Series PWM & stat οf charge(SOC); 4 Stages: equalization, PWM, Boost аnd Float, temperature compensated charging; Electronic protections: Short circuit аnd over current-solar аnd load; Reverse current аt night; Limits high voltage tο protect loads; Lighting protection; Tropicalization Conformal coated printed circuit board;