Frequently Asked Questions

A piggyback plug is for easy connection to a 120V AC grounded receptacle. Most of our K-Kontrol thermostats are available with a piggyback plug for easy installation. Simply plug the equipment you are trying to control into the plug, and plug the receptacle into a 120V outlet. Click here for more information.

The thermostat has three contact points. Most of our thermostats are wired for heating, unless specified otherwise. When you open the thermostat you should see a white wire that is at blue dot and another wire at the red (heating). The red is your power – do not move this wire. The wire on the blue dot needs to be moved to the yellow dot to be wired for cooling.

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When a switch changes states from Open to Closed. The difference between those two points is the differential, or hysteresis.

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Yes, we offer direct replacement options from most of our competitors. Click here for a cross reference.

Yes, we offer direct replacement options from most of our competitors. Click here for a cross reference.

Yes, we offer direct replacement options from most of our competitors. Click here to review a cross reference guide.

Our Tempro products are manufactured in China, but stocked in the U.S.A. We ship products globally. Contact us for a request for quote!

Our Tempro products are manufactured in China, but stocked in the U.S.A. We ship products globally. Contact us for a request for quote!

You can purchase our products directly from us via our online store , Amazon or eBay.

For quantities greater than 20 units or to establish an account, please send a request for quote for special pricing.

Our products are also sold with many distributors. Click here for a complete list.

Single stage thermostats are designed to control individual heating or cooling units independently. Two stage thermostats are designed to work with a heating or cooling system that operates at two levels, providing enhanced comfort and energy efficiency. Click here to learn more!

NEMA is described as: “standards that are useful in defining the types of environments in which an electrical enclosure can be used”. Tempro thermostats are NEMA 1 & 4X rated. Click here to learn more!

Yes! Click here to learn more.

Tempro thermostats are NEC 457 ag-rated, and NEMA 1-4X.

A NEMA 1 Cooling Thermostat is designed to regulate temperature in cooling applications for industrial and commercial environments. It operates by closing contacts to activate cooling equipment when the ambient temperature rises and opening them to shut off the system as the temperature drops by about 3°F. These thermostats feature durable steel or stainless-steel enclosures that protect against dust, light, and minor splashes, making them ideal for indoor use. For installation instructions, wiring diagrams, and model details, check out our full guide.

Installing Tempro NEMA 1 Remote Bulb Sensors correctly is crucial for precise temperature tracking. For remote room installations, position the sensor bulb where air flows freely and avoid confined spaces to ensure accurate readings. In cold room setups, secure the sensor bulb tightly on the suction side of the refrigerant line for consistent monitoring. For duct installations, place the sensor bulb in the primary airflow, away from heat sources or cooling coils, to prevent measurement errors. Finally, in tank installations, submerge the bulb into the liquid and position it where the fluid circulates naturally, avoiding external temperature influences. For full installation instructions and specifications, refer to the product guide. 

To install these thermostats, use the dual SPDT switches to manage your heating and cooling systems. Ensure the unit is mounted in a protected indoor environment. The first switch controls heating, while the second activates the cooling system if temperatures rise further. For detailed wiring instructions and setup configurations, please refer to the product guide.

To install these thermostats, connect the dual SPDT switches to control both the damper motor and the fan motor. When the temperature hits the knob setting, the damper motor activates; if it rises another 3°F, the fan motor turns on to increase airflow. For a detailed wiring diagram and complete setup instructions, refer to the product guide.

To set up these thermostats, connect the SPDT/SPDT switches to control a two-speed fan. When the temperature reaches the set point, the low-speed fan activates. If the temperature increases by about 3°F, the high-speed motor engages to boost airflow. For complete wiring diagrams and installation instructions, refer to the product guide.

To install these thermostats, connect the SPDT/SPDT switches to control the two heating stages. First, the high-temperature switch engages as the temperature drops to the set knob position, activating the first stage of heating. If the temperature falls another 3°F, the low-temperature switch turns on the second stage. For more information, check the product guide.

Begin by connecting the power supply wire to the (R) Red Terminal and the heating unit wire to the (B) Blue Terminal. The thermostat will open the contacts to turn off the heater when the temperature rises and close them to turn the heater back on as the temperature drops by about 3°F. For detailed instructions, please refer to the product guide.

First, plug your heating appliance into the piggyback plug. Then, connect the piggyback plug to a 120-volt outlet. These models are already configured for heating, so setup is quick and easy. Refer to the product guide for additional details.

First, connect the power supply wire to the (R) Red Terminal. Next, attach the heating unit wire to the (B) Blue Terminal and the cooling unit wire to the (Y) Yellow Terminal. The thermostat automatically switches between heating and cooling based on temperature changes. Refer to the product guide for detailed wiring instructions.