{"product_id":"mileseey-tr20-handheld-thermal-camera","title":"MILESEEY TR20 Handheld Thermal Imaging Camera, 320×240, 50Hz, 40mK","description":"\u003cp\u003eThe MILESEEY TR20 is a handheld thermal camera with a 320×240 infrared sensor (76,800 thermal pixels), a fast 50 Hz refresh rate and sensitivity of 40 mK or better. It is built for HVAC technicians, electricians and home inspectors who need sharp detail and smooth live imaging.\u003c\/p\u003e\u003ch3\u003eAt a glance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e320×240 infrared sensor (76,800 pixels)\u003c\/li\u003e\n\u003cli\u003e50 Hz refresh rate and ≤40 mK sensitivity\u003c\/li\u003e\n\u003cli\u003e-20°C to 550°C with ±2°C or ±2% accuracy\u003c\/li\u003e\n\u003cli\u003eWide 50° × 37.2° field of view and a 2.8-inch screen\u003c\/li\u003e\n\u003cli\u003eAuto hot and cold spot tracking, alerts and video recording\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFull specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInfrared resolution:\u003c\/strong\u003e 320×240 (76,800 pixels)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal sensitivity (NETD):\u003c\/strong\u003e ≤40 mK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefresh rate:\u003c\/strong\u003e 50 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e -20°C to 550°C (-4°F to 1,022°F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccuracy:\u003c\/strong\u003e ±2°C or ±2%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField of view:\u003c\/strong\u003e 50° × 37.2°, wide angle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e 2.8-inch LCD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e auto hot and cold spot tracking, video recording, high and low temperature alerts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat the specs mean in practice\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eResolution and spot size.\u003c\/strong\u003e 320×240 gives about 56% more thermal pixels than a 256×192 camera. With a 50° field of view each pixel covers about 2.7 mm at 1 m (27 mm at 10 m), so smaller hot spots and finer edges show up clearly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e50 Hz refresh.\u003c\/strong\u003e The picture updates twice as fast as a 25 Hz camera, so panning across equipment looks smooth instead of choppy.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSensitivity.\u003c\/strong\u003e 40 mK or better separates surfaces that differ by 0.04°C. That is useful for subtle patterns such as faint moisture, a slightly warm connection or uneven radiant heating.\u003c\/p\u003e\u003ch3\u003eWhat you can use it for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical panels:\u003c\/strong\u003e scan breakers and busbars, where a wide view covers more in one frame.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHVAC:\u003c\/strong\u003e check coils, ducts and refrigerant lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHome inspection:\u003c\/strong\u003e find insulation gaps, air leaks and moisture patterns.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReporting:\u003c\/strong\u003e record video of a scan to show a client.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWho should look elsewhere\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eYou want a lower-cost entry camera for occasional use. The \u003ca href=\"\/products\/mileseey-tr10-handheld-thermal-camera\"\u003eMILESEEY TR10\u003c\/a\u003e or \u003ca href=\"\/products\/uni-t-uti120s-handheld-thermal-imager\"\u003eUNI-T UTi120S\u003c\/a\u003e cost less.\u003c\/li\u003e\n\u003cli\u003eYou need to measure above 550°C.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow it compares\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/uni-t-uti260b-professional-thermal-camera\"\u003eUNI-T UTi260B\u003c\/a\u003e: 256×192 with a fusion mode and an IP65 body.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/mileseey-tr10-handheld-thermal-camera\"\u003eMILESEEY TR10\u003c\/a\u003e: 192×192 at 25 Hz, with an 8-hour battery.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/vevor-pro-handheld-thermal-camera\"\u003eVEVOR Pro\u003c\/a\u003e: a larger 3.45-inch screen and a 2 MP visible camera.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTips for better results\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eScan electrical equipment under normal load and compare like with like.\u003c\/li\u003e\n\u003cli\u003eShiny bare metal reads cooler than it really is. Measure a patch of black electrical tape instead.\u003c\/li\u003e\n\u003cli\u003eGlass blocks thermal imaging, so you see the glass surface and not what is behind it.\u003c\/li\u003e\n\u003cli\u003eAllow a few minutes after power-on for the camera to stabilize before taking critical measurements.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does 320×240 give me over 256×192?\u003c\/strong\u003e\u003cbr\u003eAbout 56% more thermal pixels, so smaller hot spots and finer edges show up more clearly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does 50 Hz matter?\u003c\/strong\u003e\u003cbr\u003eThe picture updates twice as fast as a 25 Hz camera, so panning across equipment looks smooth instead of choppy.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan it record video?\u003c\/strong\u003e\u003cbr\u003eYes. It records video as well as still images.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it track hot and cold spots?\u003c\/strong\u003e\u003cbr\u003eYes. It automatically tracks the hottest and coldest points in the scene.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it work without a phone?\u003c\/strong\u003e\u003cbr\u003eYes. It is a standalone handheld with its own screen.\u003c\/p\u003e\u003ch3\u003eCommon applications\u003c\/h3\u003e\u003cp\u003eHVAC diagnostics, Electrical inspections, Building maintenance. Choose a thermal camera based on the target size, working distance and required measurement accuracy.\u003c\/p\u003e\u003ch3\u003eBuying guidance\u003c\/h3\u003e\u003cp\u003eCompare native infrared sensor resolution, temperature measurement range and device compatibility before ordering. Image enhancement does not increase native sensor resolution. For questions about suitability, contact ThermalVisionPlus before purchase.\u003c\/p\u003e\u003ch3\u003eRelated thermal imaging guides\u003c\/h3\u003e\u003cp\u003eExplore our \u003ca href=\"\/blogs\/buyers-guides\/home-inspection-thermal-camera-guide\"\u003ehome inspection thermal camera guide\u003c\/a\u003e, \u003ca href=\"\/blogs\/buyers-guides\/thermal-camera-electrical-inspection-guide\"\u003eelectrical inspection guide\u003c\/a\u003e, and \u003ca href=\"\/blogs\/buyers-guides\/phone-vs-handheld-thermal-camera-guide\"\u003ethermal camera buying comparison\u003c\/a\u003e.\u003c\/p\u003e","brand":"MILESEEY","offers":[{"title":"Default Title","offer_id":48274759549099,"sku":"THERM-044","price":455.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0804\/6244\/6763\/files\/77640317.jpg?v=1792111910","url":"https:\/\/thermalvisionplus.com\/products\/mileseey-tr20-handheld-thermal-camera","provider":"My Store 5","version":"1.0","type":"link"}