Adding a solar power system to an RV can create added convenience and savings. Solar panels produce energy from sunlight, an abundant and renewable energy source. Adding solar panels can help you dock and park your recreational vehicle without a power hookup, resulting in cost savings and increased freedom. Unlike traditional gas generators, Renogy 400-Watt 12-Volt Solar RV Kit silently recharges your batteries so you can enjoy the great outdoors without the extra noise. Solar panels allow you to run limited low-watt electrical equipment without a power hookup.Renogy RV Kits are designed to meet your RV needs. This kit includes 4 10-Watt 12-Volt Monocrystalline Solar Panels, 1 Adventurer 30A PWM Charge Controller, 1 30 ft. 10AWG Solar Adaptor Kit, 1 16 ft. 10AWG Tray Cable, 3 pairs of Branch Connectors, a BT-1 Bluetooth Module and 1 Renogy Cable Entry Housing.The Adventurer 30A PWM Charge Controller is specifically designed for RV applications as it allows for aesthetically clean flush mounting on walls and is negative-grounded for battery compatibility. It also features an LCD screen for displaying system operation information and data and allows for full control of parameter settings. The control is embedded with self-diagnostics and electronic protection functions that prevent damage from installation mistakes or system faults.