Snow Switch

PD Pro
Snow Switch
  • Automatic Snow and Ice Melting Control Minimizes Operating Costs
  • Supply Voltage 100-277V
  • Rated for Up To 7 Amp Inductive Loads for Pilot Duty Applications
  • Resistive Loads Up To 30 Amps
  • Weather-Resistant NEMA 4X Enclosure
  • UL Listed for Temperature Regulating Equipment
  • Adjustable Hold-On Timer Continues Heater Operation After Snow and Ice Discontinue to Ensure Complete Melting
  • Dual Sensor Capability to Meet Site Performance Requirements
  • Automatic and Manual-Override Operator Controls for Changing Environmental Conditions
  • Optional Remote Control Operation for Added Convenience

The Snow Switch Model PD Pro is an automatic snow and ice melting control system. Utilizing standard Environmental Technology snow and ice sensors (sold separately), applications include snow and ice detection and melting for pavement, sidewalks, loading docks, roofs, gutters and downspouts in commercial and residential environments.

The PD Pro interfaces with up to two standard Environmental Technology sensors to meet site requirements. The CIT-1, GIT-1, and SIT-6E sensors reliably detect snow and ice melting in gutter and pavement applications. The CIT-1 aerial snow sensor detects falling or blowing precipitation before snow or ice begin to form, allowing the control to begin managing the system. The CIT-1 sensor may be roof or mast mounted and can be paired with the GIT-1 sensor for gutter applications or the SIT-6E sensor for pavement applications. All three sensors detect precipitation as snow at temperatures below 38°F (3.3°C). The PD Pro is signaled only if moisture occurs below this temperature, saving energy and ensuring thorough snow and ice melting. Since 1968, these sensors have been the industry’s most versatile and cost-effective automatic snow melting control sensors.

The PD Pro features automatic and manualoverride operator controls. The adjustable Hold-On timer continues heater operations up to 8 hours after snow or ice conditions end to ensure complete melting. The Heater Cycle control button allows manual initiation or cancelation of a heating cycle. The optional RCU-3 remote control unit can be located for convenient monitoring and control. These flexible control options provide complete snow melting and water evaporation at a low operating cost.

The PD Pro weighs only 3 pounds and measures 5-1/2” (L) x 8-1/8” (W) x 4-3/8” (H). Comprehensive instruction manuals simplify installation and operation. These products are also supported by Environmental Technology technical support.

The PD Pro is a capable snow and ice control for medium-sized applications whose features and power requirements do not require an APS or EUR Series control panel.


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