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Tekmar Programmable Thermostat, Two Heat or Heat-Cool (Includes Sensor 079)

SKU: 521

$248.00 

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Product Details

Tekmar 521

The programmable thermostat 521 is designed for three different modes of operation: single stage heating, two stages of heating with a fan or one stage of heating and one stage of cooling with a fan. Two auxiliary sensors may be added to measure the floor, outdoor or room temperature. A slab sensor 079 is included to measure floor temperature to protect the floor from overheating and enhance comfort. The programmable schedule supports either a 7 day or 24 hr schedule with 2 or 4 events per day. A permanent temperature hold button overrides the programmable schedule. An optional adaptor plate 012 is available to allow the thermostat to mount onto a single gang electrical box.


  • Finish White
  • UPC 779655052107
  • Online Product ID 9574669
  • Width 3"
  • Height 3.69"
  • Depth 0.94"
  • Warranty 3 years Limited
  • Prop65 Warning Warning: This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
  • Ambient Temperature Range 32 to 122 degree F
  • Class Class 2
  • Control Type Microprocessor
  • Enclosure Material Polyvinyl Chloride
  • Includes Slab Sensor 079
  • Indoor Outdoor Indoor
  • Nema Rating NEMA 1
  • Power Rating 1.8 VA
  • Power Supply 10 to 30 VAC/VDC, 50/60 Hz
  • Relative Humidity <=90 percent Non-Condensing
  • Relay 30 VAC/VDC, 2 A, Class 2 Circuits
  • Safetylist Meets Class B: ICES and FCC Part 15, CE
  • Sensor NTC Thermistor, 10 kOhm at 77 degree F (25 degree C plus /- 0.2 degree C) Beta = 3892
  • Shipping  0.6 lbs.

Additional information

  • Fan
  • Outdoor and floor temperature display
  • Backlight
  • Cooling
  • Time clock
  • Four hour battery-free clock backup
  • Two stage heating
  • Permanent temperature hold, radiant floor heating
  • 7 day programmable schedule, optimum start

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