We are offering Solar Charge controller is equipped with world's latest technology Digital Signal Processing (DSP). Fully protected against lightning, transient over voltage and reverse current flow. Silent , Solid state Pulse Width Modulation (PWM Charging) process with three stage control, temperature compensated set points and auto/manual equalization. Protection against various parameters Below: - Solar /battery reverse polarity. - Reverse current flow battery to solar array during night- Over charging current and short circuit. - Output over voltage- Excessive temperature of heat sink.