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Thermistors & Thermistor Probes

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Custom Thermistors & RTDs

We offer custom thermistors and RTDs designed to meet your specific application and performance requirements. From probe design to lead configuration, our team works with you to develop sensor solutions that deliver accuracy and reliability where it matters most.

Benefits of Custom temperature sensors

Application-Specific Design

Custom sensors are designed based upon the needs of your application whether it’s harsh environments, rapid response times, space constraints, etc.

Improved Accuracy and Stability

Tailoring resistance values, RT Curves and more to ensure optimal performance and long term stability, even in challenging conditions.

 Seamless Integration

Custom lead lengths, connectors, and housings simplify installation and ensure compatibility with your existing systems.

Reduced Risk of Downtime

By designing around your specifications, custom sensors help prevent measurement errors and failures that can interrupt operations.

products we can customize

Thermistors

Special lead lengths and styles, non-standard resistance values or RT Curves, tolerance or accuracy…just let us know what you need.

Thermistor Probes

There are a multitude of options to select from when designing a thermistor probe, even customized packaging. Let us know what you need!

RTD Sensors

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RTD Probes

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Temperature Sensing Insights

There are many different types of thermometers on a white surface.

What is a Thermistor Probe?

By EI Sensor • August 1, 2025
Learn what a thermistor probe is, how it works, and why it’s ideal for accurate temperature sensing in industrial, medical, and HVAC applications.
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EI Sensor Technologies Engineer Training

By EI Sensor • July 30, 2025
Upcoming event
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Temperature Sensor Terminology

By EI Sensor • July 28, 2025
Explore key temperature sensor terminology and definitions to better understand RTDs, thermistors, accuracy, response time, and more in sensor applications.
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partner with ei sensor

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.