Thermostat for Heater (Hygrostat) – Fandis, Stego Brands Contact breaker for regulating heaters. (Normally closed.) Features: Temperature range: 10°C to 60°C 240V AC/5 A, 120V AC/10 A Model Nos.: Fandis: I6R 35F Stego: KTO 011 DIN rail mountable, with red knob.