Ag-Rated Line Voltage Thermostats

Tempro ag-rated line voltage thermostats are designed to accurately regulate precise temperature in agricultural & other outdoor corrosive settings.


Variety of custom options available, such as, temperature ranges, sensing element lengths & private branding.


We take pride in quality control & reliable operation of our components. Every switch is individually tested before it leaves the factory.


Tempro Products meet NEMA, UL, cUL, & N.E.C. 547 Ag-Ratings.


Products are designed & shipped from our facilities in Eau Claire, WI to clients across the globe.

The Ag-Rated Line Voltage Thermostat is designed to accurately regulate precise temperature in agricultural settings. These thermostats meet the requirements for NEMA 4X and N.E.C. 547 for Outdoor use including Ag-Corrosive environments.

A broad temperature range between 0° and +120°F allows for a wide range of heating and cooling applications. Models are available for heating, cooling and ventilating.

All models include Fahrenheit and Celsius temperature scales. Prewired models available.

  • Accurate Temperature Regulation
  • Units Available For Heating, Cooling & Ventilating Applications
  • Fixed & Remote Bulb Sensors
  • 0°F to 120°F, 3.5° Differential
  • Durable glass reinforced nylon housing
  • NEMA 4X & NEC 547 rated for Ag & Wash Down Environments
  • “O Ring” gasket provides consistent & repeatable seal
  • Trapped cover screws can’t get lost
  • Single & Two Stage
  • 24VAC to 600VAC
  • Amperage: 16/25A
  • UL & cUL tested & approved

Cross Reference

We are certain of our position at the top so we’re comparing our industrial line voltage thermostats with other top brands. Tempro NEMA 4X Rated Line Voltage Thermostats compared to other models in the marketplace feature:

  • The same bolt pattern as competitor models
  • More robust than competitor models.
  • Copper spring is 62% greater cross section compared to the competition.
  • Contacts are 63-97% larger than competitor models.
  • Tempro terminals use # 10 screws with larger ring connectors @ 0.38” diameter for better conductivity compared to #4 & #8 screws used by competitors.
  • Tempro uses an “O Ring” seal between base and main housing for a consistent repeatable seal rather than glue, which is subject to inconsistency leading to possible leaks or glue drips.

What are you waiting for? We have large stock of these items, and the products can likely ship the same day! Contact us today for more information!



PECO Controls


TP Series

TF Series


30°F to 110°F

0°F to 120°F



Heating or Cooling

Heating or Cooling


UL, cUL Listed

NEMA4X Rated

NEC 547 Ag-Rated

UL Listed

NEMA4X Rated

NEC 547 Ag-Rated

Common Applications

This temperature controller can be utilized for both heating and cooling ventilation. There is a wide variety of environments this thermostat works with, such as agricultural livestock buildings & greenhouses.

Livestock Buildings


Request A Quote

Send our team your product specifications and/or application details below. One of our direct technical support team members will follow up within 1-2 business days.