The Cascadia 4x4 MPPT Charge Controller is a simple yet highly effective unit which has been designed with extreme durability in mind. The waterproof unit is IP67 rated and is highly resistant to heat and vibration. It automatically controls how much electricity reaches the battery and prevents overcharging. The charge controller has been pre-wired with fuses, terminals, and connectors. The controller can be mounted using the pre-installed 3M VHB tape, or with self-tapping screws.