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General Purpose Temperature Sensors

For simple and reliable solutions within general air sensing applications, ATC Semitec offer a wide range of epoxy coated NTC thermistors.

Utilising our Semitec AP-2, AT-2. ET, NT-4 or SP series thermistors, we can offer you a wide range of R25 and B values, depending on your specification.

These fully encapsulated temperature probes offer either IP67 or IP68 waterproof protection, they can be supplied with a variety of cable lengths up to 10 metres, and are available with or without terminals to suit your application needs.

Typical applications for air sensing  temperature probes include:

  • Air Conditioning
  • Battery Monitoring
  • Solar and Underfloor Heating
  • General Air Sensing

Call us today on 01606 871680 to discuss your application’s thermal sensor requirements.  Using our extensive technical knowledge and innovative supplier base, we will work with you to provide the optimum solution for your product.


  • Semitec Epoxy-Coated Temperature Sensors

    This is one of the simplest forms of thermistor sensor available.

    The NTC element is first soldered to lead-wires and then encapsulated in several layers of epoxy to provide an environmental seal and mechanical protection.
    A wide range of single-insulated, fully encapsulated sensors are available utilising our AP-2, AT-2, ET, NT-4 or SP series thermistors, offering you a wide range of R25 and B values.

    • Offers up to IP67 waterproof protection.
    • Temperature range: -50/+110°C (125°C)
    • Epoxy-coating Cable length: 50mm to 10 metres


  • SEmitec 103AT-11 IP67 NTC Thermistor
    Semitec 103AT-11 IP67 NTC Temperature Sensors

    Semitec AT-11 thermistor sensors are TPE encapsulated and use our popular AT-2 NTC thermistors.  They are general purpose temperature sensors suitable for use from -50°C/+110°C.

    The small overmoulded tip gives a fast-response to temperature change.

    Moisture-proof to IP67 with 3.75kV isolation, the AT-11 temperature sensor offers an excellent and accurate low-cost solution for numerous temperature sensing applications.

  • ATC Semitec IP68 Waterproof Temperature Sensors

    Where an even higher water-proof integrity is required, our ATC Semitec IP68 sensors ensure that water ingress will not be a problem. Available in either single or double-insulated formats, the double-insulated versions offer an isolation of up to 3.75kV. By utilising any of our AP, AT, ET, NT or SP series thermistors, a very wide range of resistances and B values can be offered with temperature accuracies as little as ±0.15°C.