Switch heaters on or off when your process reaches a certain temperature. Both these controllers and your heater will be powered by the same wall outlet. Place the probe into your process, plug the controller into an outlet, and plug your heater into the socket on the back of the controller’s plug. These simple temperature controllers deliver either full power or no power. They’re best used in systems where temperatures change slowly and you don’t need precise control.

IP20 and NEMA 1 rated controllers are best for indoor use. They keep dirt out and will stop objects about the size of a finger from coming into contact with a live circuit.

IP66 and NEMA 4X rated controllers seal out dirt, corrosive liquids, and water from high-pressure washdowns.

For technical drawings and 3-D models, click on a part number.