DIAL A TEMPThe compact TK Series switch and its 316 stainless-steel RTD probe measure only 72 mm, and are directly mounted into a pipe. Two mechanical setup dials rotate to quickly establish the setpoint and resetpoint temperatures. Two bright LEDs indicate switching and operating status. Electrical connection is achieved with an industry-standard Micro DC connector. A locking device prevents unintentional setpoint changes. Operating temperature range is -13 °F to 284°F (-25 °C to 140 °C). Fixed and adjustable hysterisis models available.