With a variable power consumption of 0 to 3500 W, adjustable in steps of 500 W according to desired feed-in rates, this delivers a 10% improvement in efficiency compared to similar installations. Featuring 3 integrated heating circuits (500 W, 1000 W, 2000 W) the Smart Heater is complete with fully integrated electronics, so no external contactors are necessary. Installation is easy using a plug and play approach. No additional hardware or software is needed. The desired heating remperature is manually set, and also has a temperature regulated auto cut off feature. Designed and manufactured in Germany.