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You searched for: ETI HSC-4 & HSC-5 Pavement Mount Snow Melt Control. Automatic Deicing Control Saves Energy
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ETI HSC-4 Pavement Mount Snow Melting Control


The HSC-4 Pavement-Mounted Deicing Controller reliably operates snow and ice melting heaters based upon pavement condition. This ensures that deicing heaters operate only while needed which minimizes energy costs without sacrificing snow melting effectiveness.

The HSC-4 signals for snow and ice melting at pavement temperatures below 38° F (3.3° C) while moisture in any form - including water, snow, sleet or ice - is present. Once the moisture element has dried, the built-in, one hour hold-on timer keeps heaters operating to help ensure complete snow and ice melting.

The HSC-4 accurately measures pavement temperature by compensating for its internal heating. This eliminates the cost and complexity of a separate pavement temperature sensor. For improved efficiency, products mount close to the deicing heaters to ensure that pavement and sensor become dry at about the same time.

The new mounting system provides accurate alignment with the pavement surface. Six available conduit locations add to installation flexibility and simplicity. The sensor subassembly is field replaceable without disturbing the pavement. The HSC-4 is an NEC Class 2 device operating from customer supplied 24 volts AC. It provides a floating Form A low voltage 2 amp relay contact for interfacing external heater control contactors.

Only brass, epoxy, and stainless steel are exposed to the pavement surface. Precision machining gives these products a handsome appearance that will please the building owner, engineer, and architect.



  • Reliable snow melting

  • Minimum energy costs



  • Control based upon pavement conditions

  • Rugged construction

  • Simple installation

  • NEC Class 2 device

Installation Instructions
Data Sheet
Item CodeDescriptionVendorQuantity
23832 Pavement Sensor Housing
ETI (Environmental Technology Inc.) Housing that is Required for use with HSC-4 or SIT-6E Sensor
HSC-24 Pavement Sensor - 24V Snow Switch
ETI (Environmental Technology Inc.) HSC-24 Sensor (requires 23832 Pavement Sensor Housing) - Automatic, Pavement-Mounted for snow and ice melting at pavement temperatures below 38F while moisture in any form is present.