Complement your energy system, or use in places where no electricity is available, such as remote holiday cottages or chalets. In addition, the solar charge regulators are a perfect mobile solution for campers, special vehicles and yachts. Suitable for 36 cells panels (12V systems) and 72 cells panels (24V systems). A clear integrated display, suitability for high ambient temperatures and compatibility with negative grounding. Recommended PV power ranges from 360 Wp to 1440 Wp. Model SCM40 PWM Size 3.9" x 7.4" x 2.1" Amps 40