Looking for the best 4-inch probe length for your projects?
We offer a reliable and precise temperature sensor that fits perfectly for both home and industrial use.
Finding the right temperature sensor can be tricky. A 4-inch probe length is a popular choice for many tasks. It’s versatile and easy to use.
Whether you’re working in industrial settings or home projects, a 4-inch probe fits well. It’s reliable and precise, making it a go-to option.
Need accuracy? Look no further. Durable design? Check. Ready for any job? Absolutely.
List of Top 10 4 Inch Probe Length
| Image | Title | Best For | Price |
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CGELE K-Type Thermocouple Temperature Sensors 0~600℃,2M/6.6Ft Wire Probe Length 100mm Two Wire 100×5mm Stainless Steel Probe Temperature Detector Temperature Gauge |
This temperature sensor is perfect for engineers and hobbyists who need accurate readings. It is strong, rustproof, and works in high heat. |
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TL1813 Type K Thermocouple Probe Industrial-Grade Wide Range: -50 to 2000°F Stainless Steel Probe Diameter: 0.12 inches/Length: 4 inches Includes 60-inch high-Temperature Cable |
This thermocouple probe is perfect for engineers, technicians, and DIY enthusiasts. It works well for checking extreme temperatures in furnaces, engines, and cold storage. |
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BELIMO 01DT-5LL 0.24 INCH Probe Dia., 4 INCH Probe Length, -60 * 300 F Temp Range, Duct Sensor, Passive, Single Point/Immersion MOUNTING Type |
This duct sensor is perfect for HVAC technicians and facility managers. They need a small, reliable probe that can measure wide temperatures easily. |
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Dickson D605 Piercing Temperature Probe with Coiled Cable, -200 to +1,650 degrees F, Stainless Steel, 4″ Temperature Probe Length, 5′ Cable Length |
This temperature probe is perfect for anyone needing to measure extreme temperatures in industrial settings. It’s ideal for users with Dickson dataloggers and offers precise readings from -200 to +1,650°F. The stainless steel probe and coiled cable make it easy to handle and reliable for tough environments. |
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TWTADE Stainless Steel PT100 RTD Thermistor Temperature Sensor Probe,100mm / 4″ Long Probe Thermocouple, Probe Diameter :5mm / 0.2″ (Temperature Rang: -50~420°C) 5mm x 100mm x 2M MT-225A-100mm |
This PT100 temperature sensor is perfect for engineers, technicians, and DIY hobbyists who need accurate readings. It works well in high heat or cold conditions and is easy to install. |
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Temperature Sensors K Type Probes 4 inch Length with 1/2” NPT and Terminal Head |
This temperature sensor is perfect for engineers, technicians, and DIY enthusiasts. It works well with all gauges and controllers that use RTD PT100 sensors. |
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BELIMO 01DT-5EL Duct/Immersion Temperature Sensor Passive, NI1000 (JCI), Probe Diameter 0.24″ [6 MM], Probe Length 4″ [100 MM] |
This BELIMO 01DT-5EL Duct/Immersion Temperature Sensor is ideal for professionals in HVAC and building automation. Its passive design with NI1000 (JCI) provides accurate temperature readings in duct and immersion settings. Perfect for anyone needing reliable temperature transmitters with easy installation and long-lasting performance. |
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Waekon 4-Inch Flexible Back Probe Set (77005) |
This Waekon 4-Inch Flexible Back Probe Set is perfect for mechanics and DIY car enthusiasts. It helps you reach tight spaces and check wires safely. |
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Cole-Parmer RTD Probe, 100 Ohm, ANSI 3-Blade Connector, 4 (in) Length, 5 ft Coil Cord |
This Cole-Parmer RTD Probe is perfect for anyone needing a reliable, compact, and economical temperature sensor. It’s ideal for industries where fast response time and accurate readings are key, such as in laboratories or process control environments. |
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Oakton WD-08117-85 Penetration RTD Probe, -58 to 932°F, 4″ Probe Tip Length, 0.188″ Diameter, 5″ Nylon Handle |
This Oakton WD-08117-85 Penetration RTD Probe is perfect for anyone who needs to measure temperatures in hard or semi-solid materials. Its pointed tip and sturdy stainless steel casing make it ideal for easy penetration. This probe works with Oakton Digi-Sense and Acorn RTD thermometers, ensuring accurate readings. Its nylon handle and coiled cord provide extra durability and flexibility. |
Detailed Reviews
Discover the top 10 4-inch probe length sensors, handpicked for reliability and performance. Each product is expert-reviewed and backed by customer feedback, ensuring you find the perfect fit for your needs. Whether you prioritize durability, accuracy, or affordability, this guide has you covered—read on to make the smart choice!
1. CGELE K-Type Thermocouple Temperature Sensors 0~600℃,2M/6.6Ft Wire Probe Length 100mm Two Wire 100×5mm Stainless Steel Probe Temperature Detector Temperature Gauge

CGELE K-Type Thermocouple is a high-quality temperature sensor. It has a solid probe that does not bend easily. The durable wire can handle high temperatures up to 600℃.
The stainless steel probe is rustproof and long-lasting. It uses shielded fiber glass wire, which is better than Teflon. The high accuracy IC ensures reliable readings.
This sensor is easy to use and built to last. It’s perfect for precise temperature measurements in tough conditions.
| Pros | Cons |
|---|---|
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Perfect For:
This temperature sensor is perfect for engineers and hobbyists who need accurate readings. It is strong, rustproof, and works in high heat.
Ready to Purchase?
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2. TL1813 Type K Thermocouple Probe Industrial-Grade Wide Range: -50 to 2000°F Stainless Steel Probe Diameter: 0.12 inches/Length: 4 inches Includes 60-inch high-Temperature Cable

Meet the TL1813 Type K Thermocouple Probe, your go-to for accurate temperature readings. This probe handles a wide temperature range, from -50 to 2000°F. It’s built tough for any job.
This stainless steel probe is super durable and corrosion-resistant. It also comes with a long, high-temperature cable for easy placement.
Get precise readings for all your needs. It’s ready to use right away. This probe is a reliable tool for any task.
| Pros | Cons |
|---|---|
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Perfect For:
This thermocouple probe is perfect for engineers, technicians, and DIY enthusiasts. It works well for checking extreme temperatures in furnaces, engines, and cold storage.
Ready to Purchase?
3. BELIMO 01DT-5LL 0.24 INCH Probe Dia., 4 INCH Probe Length, -60 * 300 F Temp Range, Duct Sensor, Passive, Single Point/Immersion MOUNTING Type

The BELIMO 01DT-5LL is a duct sensor with a 0.24-inch probe diameter and a 4-inch probe length. It measures temperatures from -60°F to 300°F. This passive sensor is perfect for single-point or immersion mounting.
It’s easy to install and works well in duct systems. Its simple design makes it a reliable choice for temperature monitoring.
| Pros | Cons |
|---|---|
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Perfect For:
This duct sensor is perfect for HVAC technicians and facility managers. They need a small, reliable probe that can measure wide temperatures easily.
Ready to Purchase?
4. Dickson D605 Piercing Temperature Probe with Coiled Cable, -200 to +1,650 degrees F, Stainless Steel, 4″ Temperature Probe Length, 5′ Cable Length

The Dickson D605 Piercing Temperature Probe is a Type K thermocouple designed for industrial use. It works with Dickson dataloggers to monitor temperature. The probe is sturdy and reliable.
It measures extreme temperatures, from -200 to +1,650 degrees F. The stainless-steel probe is 4 inches long, perfect for precise readings.
The coiled cable extends to 5 feet, making it easy to connect. It’s built to handle tough conditions in industrial settings.
| Pros | Cons |
|---|---|
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Perfect For:
This temperature probe is perfect for anyone needing to measure extreme temperatures in industrial settings. It’s ideal for users with Dickson dataloggers and offers precise readings from -200 to +1,650°F. The stainless steel probe and coiled cable make it easy to handle and reliable for tough environments.
Ready to Purchase?
5. TWTADE Stainless Steel PT100 RTD Thermistor Temperature Sensor Probe,100mm / 4″ Long Probe Thermocouple, Probe Diameter :5mm / 0.2″ (Temperature Rang: -50~420°C) 5mm x 100mm x 2M MT-225A-100mm

High-quality temperature sensor with a thick, durable design. Compare it to others—ours is heavier and more reliable. Perfect for precise temperature readings.
Stainless steel 304 probe ensures long-lasting performance. Temperature range: -20°C to 420°C. 2-meter cable with insulated forks for easy connection.
Compact size: 100mm probe with 5mm diameter. Weighs just 71g—light yet sturdy. Includes 1 PT100 sensor in the package.
| Pros | Cons |
|---|---|
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Perfect For:
This PT100 temperature sensor is perfect for engineers, technicians, and DIY hobbyists who need accurate readings. It works well in high heat or cold conditions and is easy to install.
Ready to Purchase?
6. Temperature Sensors K Type Probes 4 inch Length with 1/2” NPT and Terminal Head

Temperature Sensors K Type Probes are brand new and ready for use. These 4-inch probes are perfect for all your temperature sensing needs.
They are waterproof and work with any device that uses RTD PT100 temperature sensors. This makes them versatile and easy to use.
Key features: 1/2” NPT fitting, terminal head, and compatibility with gauges, meters, and controllers. Simple, reliable, and effective.
| Pros | Cons |
|---|---|
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Perfect For:
This temperature sensor is perfect for engineers, technicians, and DIY enthusiasts. It works well with all gauges and controllers that use RTD PT100 sensors.
Ready to Purchase?
7. BELIMO 01DT-5EL Duct/Immersion Temperature Sensor Passive, NI1000 (JCI), Probe Diameter 0.24″ [6 MM], Probe Length 4″ [100 MM]

The BELIMO 01DT-5EL is a duct/immersion temperature sensor designed for accurate temperature measurement. It works well in HVAC systems and other temperature-sensitive applications.
This sensor has a probe diameter of 0.24″ (6 mm) and a probe length of 4″ (100 mm). It uses NI1000 (JCI) technology and includes a temperature transmitter.
The BELIMO 01DT-5EL is easy to install and reliable. It provides precise temperature readings for optimal system performance.
| Pros | Cons |
|---|---|
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Perfect For:
This BELIMO 01DT-5EL Duct/Immersion Temperature Sensor is ideal for professionals in HVAC and building automation. Its passive design with NI1000 (JCI) provides accurate temperature readings in duct and immersion settings. Perfect for anyone needing reliable temperature transmitters with easy installation and long-lasting performance.
Ready to Purchase?
8. Waekon 4-Inch Flexible Back Probe Set (77005)

Meet the Waekon 4-Inch Flexible Back Probe Set (77005). It’s a handy tool for your needs. Get the job done right with this set.
This flexible probe set is designed for easy access. It helps you reach tight spots.
The Waekon 77005 is built to last. It’s a smart choice for any task.
| Pros | Cons |
|---|---|
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Perfect For:
This Waekon 4-Inch Flexible Back Probe Set is perfect for mechanics and DIY car enthusiasts. It helps you reach tight spaces and check wires safely.
Ready to Purchase?
9. Cole-Parmer RTD Probe, 100 Ohm, ANSI 3-Blade Connector, 4 (in) Length, 5 ft Coil Cord

The Cole-Parmer RTD Probe is a compact and economical solution for accurate temperature measurement. It offers the same precision as standard RTD probes in a smaller design. With a 100 Ohm rating and ANSI 3-Blade Connector, it’s ready for reliable use.
This probe has a 4-inch length and a 5-foot coil cord for flexibility. It features a 3-second time constant and can handle temperatures above 300°F with 35% accuracy. Custom designs are available to fit your needs.
| Pros | Cons |
|---|---|
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Perfect For:
This Cole-Parmer RTD Probe is perfect for anyone needing a reliable, compact, and economical temperature sensor. It’s ideal for industries where fast response time and accurate readings are key, such as in laboratories or process control environments.
Ready to Purchase?
10. Oakton WD-08117-85 Penetration RTD Probe, -58 to 932°F, 4″ Probe Tip Length, 0.188″ Diameter, 5″ Nylon Handle

The Oakton WD-08117-85 Penetration RTD Probe is a reliable tool for accurate temperature readings. It works in a wide range, from -58 to 932°F. The 4-inch probe tip is perfect for hard and semi-solid materials.
This probe has a sturdy design with a 316SS sheath and a 5-inch nylon handle. The pointed tip makes it easy to insert, and the SS casing keeps it from bending.
You can use this probe with Oakton Digi-Sense and Acorn RTD thermometers. The 5-ft PVC coiled cord gives you plenty of reach and flexibility for various tasks.
| Pros | Cons |
|---|---|
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Perfect For:
This Oakton WD-08117-85 Penetration RTD Probe is perfect for anyone who needs to measure temperatures in hard or semi-solid materials. Its pointed tip and sturdy stainless steel casing make it ideal for easy penetration. This probe works with Oakton Digi-Sense and Acorn RTD thermometers, ensuring accurate readings. Its nylon handle and coiled cord provide extra durability and flexibility.
Ready to Purchase?
Buying Guide
Finding the right 4-inch probe is easy with this guide. We’ll help you pick the best one for your needs.
Factors to Consider When Buying a 4-Inch Probe:
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Temperature Range:
Choose a probe that works in the temperatures you need. Some handle extreme heat or cold, while others are for milder conditions. -
Material:
Look for stainless steel probes. They are durable and rustproof, perfect for long-term use. -
Accuracy:
Precise readings are key. Pick a probe with a high-accuracy IC for reliable results. -
Wire Quality:
Shielded fiberglass or high-temperature cables ensure the probe lasts longer and works better. -
Ease of Use:
A probe with a long cable and easy connections makes your work simpler. -
Durability:
Sturdy designs handle tough conditions. Check for corrosion-resistant features. -
Compatibility:
Make sure the probe works with your devices. Look for standard fittings like 1/2” NPT. -
Application:
Think about where you’ll use it. Some probes are great for industrial settings, while others fit home projects.
With these tips, you’ll find the perfect 4-inch probe for your needs.