Introducing the Infratech INF10 Input Regulator Switch Value Control 120 Volt Heat - 15 AMP Max Black Color. Infratech’s INF Input Regulators offer ease of use at a cost-effective price. AEI can provide you with various control configurations, including In-Wall or Surface Mount options, as well as with or without weatherproof covers. The INF Input Regulator is considered an "Infinite Switch". It operates with a bi-metal contact. It pulses the heater on and off as the internal contact heats up and cools down. It is considered a coarse form of control and is commonly used for electric heaters.