Fluke offers standard and secondary probe thermistors. The series of standard thermistors includes three models with a temperature range of 0 °C to 60 °C and two models with a temperature range of 0 °C to 100 °C. The series of secondary probe thermistors includes five models with a temperature range of 0 °C to 100 °C.

U.S. Sensor manufactures a variety of NTC thermistors, thermistor probes, and thermistor assemblies. Products related to thermistors include models of leaded thermistors, surface mount thermistors, UL recognized thermistors, calibrated thermistor probes, and inrush current limiting power thermistors.