{"product_id":"ntc-10k-3950-waterproof-thermistor-probe-sensor-50-100cm","title":"NTC 10K 3950 Waterproof Thermistor Probe Sensor 50\/100CM","description":"\n\u003ch2\u003eNTC 10K 3950 Waterproof Thermistor Temperature Probe — 50cm \/ 100cm\u003c\/h2\u003e\n\u003cp\u003eKeep your appliances running at exactly the right temperature with this precision \u003cstrong\u003eNTC 10K B3950 thermistor temperature sensor probe\u003c\/strong\u003e. Designed for water heaters, coffee machines, water dispensers, and a wide range of DIY electronics or home-automation projects, this waterproof probe delivers fast, accurate readings across an impressive temperature range.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Accuracy:\u003c\/strong\u003e 10K ±1% resistance at 25 °C with a B-value of B3950 ±1% — tight tolerances for reliable, repeatable measurements.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Temperature Range:\u003c\/strong\u003e Rated from \u003cstrong\u003e-40 °C to +125 °C (-40 °F to +257 °F)\u003c\/strong\u003e, covering everything from freezing cold to high-heat appliance environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWaterproof Probe:\u003c\/strong\u003e Fully sealed tip protects the sensing element from moisture, steam, and liquid immersion — ideal for water-based applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible Wire Options:\u003c\/strong\u003e Available in \u003cstrong\u003e50 cm or 100 cm\u003c\/strong\u003e cable lengths to suit different installation requirements. Wire: 26AWG (2651), rated to 105 °C.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlug-and-Play Connector:\u003c\/strong\u003e Pre-fitted with an \u003cstrong\u003eXH2.54-2Y connector\u003c\/strong\u003e for quick, hassle-free connection to control boards, microcontrollers (Arduino, Raspberry Pi), and OEM PCBs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBroad Compatibility:\u003c\/strong\u003e Perfect for water heaters, coffee makers, water dispensers, 3D printer heated beds, aquarium controllers, HVAC systems, and more.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand New Quality:\u003c\/strong\u003e 100% new components; each unit tested before shipment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensor Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNTC Thermistor\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10K ±1% (at 25 °C)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eB-Value\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eB3950 ±1%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-40 °C to +125 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWire Spec\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2651 26AWG, rated 105 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eXH2.54-2Y\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCable Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~50 cm or ~100 cm (±5 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage Includes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 × Thermistor Probe\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eWater heaters \u0026amp; boilers\u003c\/li\u003e\n  \u003cli\u003eCoffee machines \u0026amp; espresso makers\u003c\/li\u003e\n  \u003cli\u003eWater dispensers \u0026amp; coolers\u003c\/li\u003e\n  \u003cli\u003e3D printer heated beds \u0026amp; hot ends\u003c\/li\u003e\n  \u003cli\u003eAquarium \u0026amp; fish tank temperature control\u003c\/li\u003e\n  \u003cli\u003eArduino \/ Raspberry Pi DIY temperature projects\u003c\/li\u003e\n  \u003cli\u003eHVAC \u0026amp; refrigeration systems\u003c\/li\u003e\n  \u003cli\u003eIndustrial equipment monitoring\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor a deeper understanding of how NTC thermistors work in electronic measurement and control systems, visit the NIST Temperature Calibration Resources.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Due to manual measurement, cable length may vary by ±5 mm. Slight color differences between product images and the actual item may occur due to monitor settings.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What devices is this NTC 10K thermistor probe compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This NTC 10K 3950 waterproof thermistor probe is compatible with a wide range of appliances and electronics, including water heaters, coffee machines, water dispensers, 3D printers, aquarium controllers, Arduino and Raspberry Pi projects, and HVAC systems. Any device or control board that uses a standard 10K NTC thermistor with an XH2.54-2Y connector will work seamlessly.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this thermistor probe truly waterproof?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The probe tip is fully sealed to protect the sensing element from moisture, steam, and direct liquid immersion, making it suitable for use in water heaters, dispensers, and other wet environments.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the difference between the 50 cm and 100 cm versions?\u003c\/h4\u003e\n\u003cp\u003eA: The only difference is the cable length — 50 cm (~19.7 in) or 100 cm (~39.4 in). Choose the longer cable if the sensor needs to reach further from the control board or PCB. Both versions share identical electrical specifications.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I use this thermistor with an Arduino or microcontroller?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. The 10K NTC B3950 thermistor is one of the most commonly used sensors in DIY electronics. Pair it with a voltage divider and the Steinhart–Hart equation (or a pre-built Arduino library) to convert resistance readings into accurate temperature values.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What devices is this NTC 10K thermistor probe compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This NTC 10K 3950 waterproof thermistor probe is compatible with a wide range of appliances and electronics, including water heaters, coffee machines, water dispensers, 3D printers, aquarium controllers, Arduino and Raspberry Pi projects, and HVAC systems. Any device or control board that uses a standard 10K NTC thermistor with an XH2.54-2Y connector will work seamlessly.\"}}, {\"@type\": \"Question\", \"name\": \"Is this thermistor probe truly waterproof?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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