The ETI® APS–3C snow melting and gutter de-icing controller when used with compatible sensors automatically controls surface snow melting and roof and gutter de-icing heating cables, ensuring minimum operating costs. Typical applications include pavement, sidewalk, loading dock, roof, gutter and down spout snow/ice melting. The adjustable hold-on timer continues heater operation for up to 10 hours after snow stops to ensure complete melting. The APS–3C provides a relay closure interface for use with energy management computers (EMC). This feature can also be used for general purpose remote control and annunciation and other advanced applications. All sensor and communications wiring is NEC Class 2. This simplifies installation while enhancing fire and shock safety.