The TS-1 sensor measures outside temperatures and is placed in the area that best represents the outdoor temperature conditions. Each MSC-1 includes a TS-1 temperature sensor. The TS-1 operates on low voltage provided by the MSC-1 control unit and allows the MSC to determine when to activate snowmelting or de-icing equipment. Easily affixed to a wall or fascia by two screws, the TS-1's small size and neutral color allows the sensor to discreetly blend with almost any background. The TS-1 is supplied with 10 ft of connection wire which may be extended up to 500 ft with an appropriately rated 18-20 AWG 3 wire unshielded cable.