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Nelson™ Heat Trace SMTS-1 Temperature Sensor
Nelson™ Heat Trace SMTS-1 Temperature Sensor measures temperatures and is placed in the area that best represents the outdoor temperature conditions.
Each SMMC-3 includes a SMTS-1 temperature sensor.
Nelson™ Heat Trace SMTS-1 Temperature Sensor


Certifications and Compliances
cULus Listed: Ordinary Locations
Working Temperature
-40 °C to +70 °C (-40 °F to +160 °F)
Storage Temperature
-40 °C to +70 °C (-40 °F to +160 °F)
Relative Humidity
0 to 100%
Power Supply Voltage
24 Vac
Maximum Amperage
500 mA


  • The SMTS-1 operates on low voltage provided by the SMMC-3 Control Panel and allows the SMMC-3 to determine when to activate snow-melting or de-icing equipment
  • Easily affixed to a wall or fascia by two screws, the SMTS-1's small size and neutral color allows the sensor to discreetly blend with almost any background
  • Supplied with 3 m (10 ft) of connection wire which may be extended up to 152.4 m (500 ft) with an appropriately rated 18-20 AWG 3-wire unshielded cable


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