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Thermistors & Thermistor Probes

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Medical temperature sensors

Accuracy and reliability are critical in medical applications—and our temperature sensors deliver both. Designed for use in diagnostic equipment, patient monitoring, and life science devices, our solutions meet the high standards required for healthcare environments.

Our medical Sensing Solutions

We provide temperature sensing solutions tailored for the precision and reliability demanded by medical and life science applications. From patient monitoring to diagnostic equipment, our sensors support accurate, stable performance in sensitive healthcare environments.

Thermistors

Thermistors deliver fast, precise temperature measurements with high sensitivity and reliability. Ideal for compact spaces and tight-tolerance applications across a range of industries.

Thermistor Probes

Encapsulated for protection and easy installation, thermistor probes provide dependable temperature readings in air, liquid, or surface environments. A versatile solution for HVAC, medical, and commercial systems.

RTD Sensors

RTD sensors offer excellent accuracy, repeatability, and long-term stability—making them ideal for applications where precision is critical. Available in multiple resistance values and configurations to meet your system’s demands.

RTD Probes

Designed for rugged environments, RTD probes combine robust construction with precise sensing performance. Commonly used in industrial, process control, and high-reliability systems.

Custom Sensors

When off-the-shelf options don’t meet your needs, our custom sensors are built to your exact specifications. From form factor to function, we work with you to deliver temperature sensing solutions that fit seamlessly into your application.

Temperature Sensing Insights

A red bead is on a silver wire on a white background.

PTC Thermistors, What They Are and How They Work

By EI Sensor • July 24, 2025
Learn what PTC thermistors are, how they work, and their key applications in temperature sensing, overcurrent protection, and industrial control systems.
A bunch of different types of sensors on a table

What is a Thermistor?

By EI Sensor • July 24, 2025
Thermistors are THERMally sensitive resISTORS whose electrical resistance varies predictably with their body temperature, making them ideal tools for monitoring and controlling temperature in numerous applications including household and industrial products.
A group of three different colored electronic components on a white surface.

Types of Temperature Sensors

June 2, 2025
Temperature sensors measure and quantify temperature in materials and internal or external environments.
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Using the highest quality materials, state of the art equipment and proprietary production techniques, EI Sensor is dedicated to producing a temperature sensor that meets or exceeds our customers’ requirements. With a strong commitment to quality, continuous improvement is necessary. Our team continues to invest in research and development of new processes as well as enhancing existing processes that will result in a precise, efficient, cost effective thermistor, RTD or temperature probe assembly.