Size: PWM 30A 100W Monocrystalline Starter Kit is designed specifically for customers new to solar. The Starter Kit is great for off-grid applications, such as RVs, trailers, boats, sheds, and cabins - providing many benefits, including, but not limited to, quiet power production and grid independence. This solar kit comes with the tools necessary for a new system: a 100W 12V Monocrystalline Solar Panel, a 30A PWM Wanderer Charge Controller, a 20ft 10AWG MC4 Adaptor Kit, an 8ft 10AWG Tray Cable, and a set of Z-brackets. Start your solar adventure with a Starter Kit. Negative grounding controller ensures the broader off grid applications and safety, especially to be used on a vehicle which has battery negative on the chassis. A little extra investment on the right charge controller will generate a much higher return and prevent system failure.