Protect your engine and use your boat when you want to, not when the weather dictates! A great alternative to winterizing your engine, these heaters feature a safe, ignition-protected design and a thermostat that turns them on at 40F. and off at 55F. Unlike other heaters, as the ambient temperature changes, their self-regulating design varies the wattage, making them energy efficient. Casings are anodized aluminum. Their small size and ability to mount horizontally, sideways even upside down makes them easy to install where space is limited. Heaters can be permanently mounted, or for heaters manufactured after 2004, we offer Quick Release Brackets for secure mounting and quick removal when desired. Heaters include a 20' power cord and operate on 115V AC. One year warranty. Power Source: 115V AC Material: Anodized aluminum Warranty: One year Installation Manual