Plug in the thermostat, then plug your line-voltage heater into the socket on the thermostat's plug. Use the included metal hanger for mounting.

Commonly used with line-voltage hydronic heaters, this thermostat senses the temperature of liquids. The thermowell protects the sensor.

Control one- and two-speed line-voltage HVAC systems. Set the thermostat to activate the device’s second speed when the temperature surpasses the setting for the first speed by 3.6° F to 9° F.

These thermostats are rated NEMA 4X for protection from dirt, washdowns, and corrosion. Use to regulate line-voltage HVAC systems.

Place sensor in enclosures or different rooms than the rest of the thermostat to control temperature from outside the space. Use to regulate line-voltage HVAC systems where flammable gases, vapors, and dust are present. Thermostats are rated Class I, Divisions 1 and 2, Group D; and Class II, Divisions 1 and 2, Groups E, F, and G.

Use to regulate line-voltage HVAC systems where flammable gases, vapors, and dust are present. Thermostats are rated Class I, Divisions 1 and 2, Groups C and D; and Class II, Divisions 1 and 2, Groups E, F, and G.

Connect to a Wi-Fi network so you can remotely program, monitor, and control the temperature from a computer, tablet, or smart phone. These thermostats control low-voltage, multistage HVAC systems that have up to three heating and cooling speeds. Use them to set an individual program for each day of the week.

Set these thermostats to adjust the temperature at certain times each day. If the power fails, they have battery backup to retain your program.

They control low-voltage HVAC systems. Single-stage thermostats work with systems that have only one speed. Multistage thermostat works with systems that have up to three heating speeds and two cooling speeds.

Thermostats with a daily program function can have an individual program for each day of the week.

Add an optional remote sensor (sold separately) to touchpad thermostats to take temperature reading up to 300 feet from the thermostat.

These thermostats work with low-voltage HVAC systems that have only one speed.

Style A thermostats mount vertically or horizontally.

Also known as a two-pipe thermostat, this thermostat uses compressed air for power. Use when electricity is not practical or available for controlling your HVAC system. It is direct action, so as the temperature goes up, the pressure in the system goes up.

Air consumption is measured in standard cubic inches/minute (scim).

The included universal fitting kit consists of a cover, mounting plate, dial stops, screws, tubing reducers, tubing, and mounting hardware. Internal filters are for the air connections and are included.

Calibration kit is sold separately and enables quick adjustment of thermostat.

Also known as a two-pipe thermostat, this thermostat uses compressed air for power. Use when electricity is not practical or available for controlling your HVAC system. It is reverse action, so as the temperature goes up, the pressure in the system goes down.

Air consumption is measured in standard cubic inches/minute (scim).

The included universal fitting kit consists of a cover, mounting plate, dial stops, screws, tubing reducers, tubing, and mounting hardware. Internal filters are for the air connections and are included.

Calibration kit is sold separately and enables quick adjustment of thermostat.

Actuators automatically switch between incremental and proportional control to adjust dampers to regulate airflow. Actuators attach to the damper shaft to rotate it open and closed when signaled by a controller (not included).

This actuator provides better control than incremental actuators because it is constantly being positioned in response to duct airflow requirements. Use to automatically adjust dampers to regulate airflow. It attaches to the damper shaft to rotate it open and closed when signaled by a controller (not included). Actuator can be set to return the damper to an open or closed position if the power fails. Use the crank for precise adjustments.