--- product_id: 44389411 title: "Adafruit PT100 RTD Temperature Sensor Amplifier - MAX31865" brand: "adafruit" price: "£38.13" currency: GBP in_stock: true reviews_count: 12 category: "Adafruit" url: https://www.desertcart.co.uk/products/44389411-adafruit-pt100-rtd-temperature-sensor-amplifier-max31865 store_origin: GB region: United Kingdom --- # Adafruit PT100 RTD Temperature Sensor Amplifier - MAX31865 **Brand:** adafruit **Price:** £38.13 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Adafruit PT100 RTD Temperature Sensor Amplifier - MAX31865 by adafruit - **How much does it cost?** £38.13 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/44389411-adafruit-pt100-rtd-temperature-sensor-amplifier-max31865) ## Best For - adafruit enthusiasts ## Why This Product - Trusted adafruit brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description For precision temperature sensing, nothing beats a Platinum RTD. Resistance temperature detectors (RTDs) are temperature sensors that contain a resistor that changes resistance value as its temperature changes, basically a kind of thermistor. In this resistance sensor, the resistor is actually a small strip of Platinum with a resistance of 100 ohms at 0°C, thus the name PT100. You can also use this sensor to measure any kind of variable resistor that has about 100 ohm of resistance (but can range from half to double that) Compared to most NTC/PTC thermistors, the PT type of RTD is much most stable and precise (but also more expensive) PT100's have been used for many years to measure temperature in laboratory and industrial processes, and have developed a reputation for accuracy (better than thermocouples), repeatability, and stability. However, to get that precision and accuracy out of your PT100 RTD you must use an amplifier that is designed to read the low resistance. Better yet, have an amplifier that can automatically adjust and compensate for the resistance of the connecting wires. If you're looking for a great RTD sensor, today is your lucky day because we have a lovely Adafruit RTD Sensor Amplifier with the MAX31865 breakout for use with any 2, 3 or 4 wire PT100 RTD! Review: Worked first try - Board worked great first try. Used it for my 3d printer running klipper to use a pt100 sensor on the hotend. Plugged it into my RPI and everything worked (almost ) first try (had the wires switched around in the config) which is a first for me. If I’m being honest, I’ve had enough bad experience buying electronic parts on desertcart that I wouldn’t recommend it personally. Looking through these reviews a lot of people were sent pt1000 boards instead of pt100’s. This isn’t super uncommon when buying small electronics on desertcart. Def wouldn’t do it very often unless you’re in a pinch and need a pet asap like I did. Other than that, everything was great and I was sent a genuine adafruit part, which are always high quality. For those wondering btw, the 4301 resistor on the board (look closely for that number) is for a pt1000 and the 431 is pt100. If yours says 4301, it’s the wrong part. Review: Almost returned it but it worked - I thought it was DOA but after I bought another one from another firm for less to make sure it was bad, I noticed my mistake in wiring it and it works fine. Mine was PT100 as expected. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01N4LEVZN | | Additional Features | Waterproof | | Age Range Description | Adult | | Best Sellers Rank | #377,786 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,038 in Temperature Probes & Sensors | | Brand Name | Adafruit | | Connectivity Technology | SPI | | Customer Reviews | 3.9 3.9 out of 5 stars (36) | | Display Type | Digital | | Indoor Outdoor Usage | Outdoor | | Inner Material | Platinum | | Item Weight | 2.7 Grams | | Manufacturer | Adafruit | | Model | 3328 | | Outer Material | Plastic or Rubber | | Part Number | 3328 | | Power Source | Battery Powered | | Product Care Instructions | Wipe Clean | | Response Time | 500 Milliseconds | | Reusability | Reusable | | UPC | 789185843472 | | Upper Temperature Range | 850 Degrees Celsius | ## Product Details - **Age Range (Description):** Adult - **Brand:** Adafruit - **Connectivity Technology:** SPI - **Display Type:** Digital - **Outer Material:** Plastic or Rubber - **Power Source:** Battery Powered - **Product Care Instructions:** Wipe Clean - **Response Time:** 500 Milliseconds - **Special Feature:** Waterproof - **Upper Temperature Rating:** 850 Degrees Celsius ## Images ![Adafruit PT100 RTD Temperature Sensor Amplifier - MAX31865 - Image 1](https://m.media-amazon.com/images/I/71iUe2-dmkL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Worked first try *by L***E on July 22, 2023* Board worked great first try. Used it for my 3d printer running klipper to use a pt100 sensor on the hotend. Plugged it into my RPI and everything worked (almost ) first try (had the wires switched around in the config) which is a first for me. If I’m being honest, I’ve had enough bad experience buying electronic parts on Amazon that I wouldn’t recommend it personally. Looking through these reviews a lot of people were sent pt1000 boards instead of pt100’s. This isn’t super uncommon when buying small electronics on Amazon. Def wouldn’t do it very often unless you’re in a pinch and need a pet asap like I did. Other than that, everything was great and I was sent a genuine adafruit part, which are always high quality. For those wondering btw, the 4301 resistor on the board (look closely for that number) is for a pt1000 and the 431 is pt100. If yours says 4301, it’s the wrong part. ### ⭐⭐⭐⭐⭐ Almost returned it but it worked *by W***S on March 16, 2023* I thought it was DOA but after I bought another one from another firm for less to make sure it was bad, I noticed my mistake in wiring it and it works fine. Mine was PT100 as expected. ### ⭐ Its actually a pt1000 *by O***W on December 17, 2020* Took me a while to figure this out, hopefully it will help someone else. This is actually a pt1000. I thought it was a fluke so I ordered another and got another pt1000. Peel the pt100 label off the package and you will see the pt1000 branded on the bag --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/44389411-adafruit-pt100-rtd-temperature-sensor-amplifier-max31865](https://www.desertcart.co.uk/products/44389411-adafruit-pt100-rtd-temperature-sensor-amplifier-max31865) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-31*