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The TPI ET9STS is a single pole wall-mounted line voltage thermostat designed for heating only. It features a built-in glass, alcohol-filled thermometer on the faceplate for easy temperature reading and offers a temperature range of 50-90 degrees Fahrenheit. This thermostat provides direct connection to resistance heating elements and unit heaters, ensuring reliable line voltage operation up to 22A at 120–277V for heating systems. It utilizes a snap-action switch with a bimetal actuator for precise temperature control, suitable for residential, commercial, and workshop heating applications.
Wall-mounted thermostat with bimetal actuator for precise heating control and integrated thermometer.
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