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Low Voltage vs. Line Voltage Thermostat

Line Voltage ThermostatsBoth low voltage thermostats and line voltage thermostats are used for controlling heating/cooling systems. Although line voltage thermostats are commonly used for radiant, convection or resistance heaters that are powered by electricity whereas low voltage thermostats are commonly used with central heating systems.  A line voltage thermostat uses direct current, 120 or 240 volts, rather than the usual 24V found in newer systems.

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How to Tell the Difference:

  • Line voltage thermostats have much thicker wires.
  • Low voltage thermostats have multiple wires.

Line Voltage Thermostat Benefits

  • Standard for most appliances making these a cost effective solution
  • Transformer isn’t necessary
  • Simple plug and play solution

Tempro Line Voltage Thermostats

Line voltage thermostats are available in a variety of styles for industrial and residential settings. Tempro line voltage thermostats are designed to accurately regulate precise temperature in commercial, industrial, and agricultural settings for heating and/or cooling applications.

  • UL Listed
  • Single or Two Stage Thermostats (SPDT/SPDT)
  • Steel, Polymeric, Stainless or Polycarbonate
  • NEMA 1 & NEMA 4X
  • -30°F to 120°F
  • Up to 22 Amps 120V/ 240V/ 277V AC

View line voltage thermostat products


Senasys designs and manufactures a wide range of temperature switches including snap disc thermostatshigh limit capillary thermostats and duct temperature sensing switches. We also make a number of lines of industrial panel mount control switches as well as a group of micro switches. We recently added a line of pressure, vacuum and air switches. We excel at helping OEMs using small to large volume of devices solve switch problems related to temperature, pressure/vacuum, air flow, and more.

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