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Thermistors & Thermistor Probes

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Automotive temperature sensors

From engine performance to battery management, accurate temperature sensing is essential in today’s vehicles. Our automotive sensors are built to withstand heat, vibration, and harsh operating conditions—delivering the reliability and precision required for modern automotive systems.

Our Autotmotive Sensing Solutions

We offer temperature sensing solutions designed to meet the rigorous demands of automotive systems. Whether for combustion engines, EV batteries, or climate control, our sensors deliver dependable performance in high-heat, high-vibration environments.

Thermistors

Thermistors provide fast, sensitive temperature readings in a compact footprint. Ideal for precision applications where quick response time is critical.

Thermistor Probes

Thermistor probes offer accurate temperature sensing in protected, ready-to-install housings. Suitable for fluid, air, or surface monitoring across various industries.

RTD Sensors

RTD sensors are known for their high accuracy, repeatability, and stability over time. A dependable choice for mission-critical temperature measurement.

RTD Probes

Encased for durability, RTD probes deliver precise readings in rugged environments. Commonly used in process control, HVAC, and industrial systems.

Custom Sensors

When your application requires more than a standard sensor, we deliver custom solutions built to your exact specifications. From specialized materials to unique configurations, we’ll help you get the performance you need.

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.