Home / Electrical / Elec_Sensors / Elec_Sensor_Temp / Nason TT Temperature Switch Nason TT Temperature Switch The factory-set TT Temperature Switch features set points from 40-300ºF (4-148ºC), as well as the industry’s largest range of media connections and probe lengths. This makes the TT extremely versatile for a variety of applications where most devices would not be suitable. SKU: Nason_TT_Temperature_Switch Category: Elec_Sensor_Temp Description Description • Bi-metal immersion temperature switch • Factory preset temperature • Direct action contacts/minimum hysteresis • Gold diffused, fine silver contacts • Available in a wide range of configurations • Economical and compact • NEMA 4, 13