This Lightning Rod Kit uses AC power to heat water and save your propane. The Lightning Rod kit can heat water to 125oF in 45-90 minutes leaving the LP system intact. Use AC and LP simultaneously for faster recovery time. Low wattage, so it doesn't interfere with other electric appliances. Includes adjustable thermostat, color-coded power cord and wiring and instructions. Units with anode rods require rod removal for installation. Universal kits fit Atwood, Suburban, MorFlo and American water heaters. 110V AC. Components UL listed. 400 watts. 4 amps. USA.