Detector resolution is the number; the rest is image processing · review
The same 160 × 120 detector as the $299.99 Klein phone camera, with a published sensitivity and emissivity setting the Klein does not give.
What the figures leave us with The best-specified camera on this shelf for the money, and the listing is honest where the genre is not: it prints its native 160 × 120 detector beside the 320 × 240 it upscales to. For $139 it gives the same detector as a $299.99 Klein plus a 40 mK sensitivity, adjustable emissivity and the widest temperature range here. The cost of the format is real — no screen, no storage, no ruggedness rating, and a dead phone is a dead camera.
NO screen. NO storage. No ingress rating. No drop rating.
“Upscales the image to 320×240 QuadIR resolution from NATIVE 160×120.”
In the same bullet as the figure that sells the camera.
This shelf’s introduction: the detector resolution is the only figure that describes what a camera can actually resolve, “and it is routinely buried under a much larger image resolution produced by upscaling”.
A hundred and sixty by a hundred and twenty is 19,200 real measurements. Interpolating them into 76,800 pixels makes a pleasanter picture and does not resolve a smaller feature.
Both Klein cameras on this shelf publish “19,200 pixels”.
A hundred and sixty by a hundred and twenty is 19,200.
Klein TI223: $299.99. Klein TI250: $314.38. This: $139.
And this one adds what both Kleins leave out — 40 mK, adjustable emissivity, a field of view, a refresh rate, and a 600 °C (1112 °F) ceiling against their 400.
Which is the second figure the hub asks for.
“Thermal sensitivity in millikelvin, which decides whether a faint difference appears at all.”
Four cameras on this shelf publish it. The two that do not are the two most expensive cameras here.
Forty millikelvin is four hundredths of a degree — enough to see where a stud is behind plaster warmed by the sun, which a camera at 150 mK will not.
The widest range on this shelf.
Both Kleins: 400 °C (752 °F). Published Bosch: 450 °C (842 °F). HSFTOOLS F2VW: 550 °C (1022 °F). HSFTOOLS P2W: 400 °C (752 °F).
Six hundred reaches a flue, a brake disc and an exhaust manifold.
Twenty-three grams. No battery. No screen to break. The visible-light fusion uses YOUR phone’s camera, which is far better than the 2 MP sensors on the standalone bodies here.
And a dead phone is a dead camera, there is no IP rating, no drop figure, no storage of its own, and Mac is not supported.
On sale at around 139 € on the American Amazon store at the time of checking.
Prices and availability are what Keepa reported on the date this page was updated; both move.
Prices quoted in this text were read on 8 October 2026. The live price is at the top of the page.
| Camera resolution | 160 × 120 DETECTOR, stated plainly — "upscales the image to 320×240 QuadIR resolution from NATIVE 160×120". That is 19,200 real measured points, which is exactly what both Klein cameras on this shelf publish as "19,200 pixels" at $299.99 and $314.38. This shelf's introduction says the detector is the only figure that describes what a camera can resolve, and this is the cheapest 160 × 120 here by a factor of two |
|---|---|
| Thermal sensitivity | 40 mK, stated. This shelf's introduction makes sensitivity the second figure to read, because it decides whether a faint difference appears at all. Four cameras on this shelf publish 40 mK; the two Kleins publish none, at twice and more than twice this price |
| Stated temperature range | −4 °F to 1112 °F (−20 °C to 600 °C), stated — the WIDEST range on this shelf. Both Kleins stop at 400 °C (752 °F), the published Bosch at 450 °C (842 °F), and the two HSFTOOLS cameras at 550 °C (1022 °F) and 400 °C (752 °F). Six hundred degrees reaches a flue, a brake disc and an exhaust manifold |
| Stated accuracy | ±3.6 °F, which is ±2 °C (36 °F). The listing calls it "professional-grade", which it is not in the sense of a named standard, and the figure matches what the Raythink and both HSFTOOLS cameras state as ±2 °C (36 °F) or ±2% |
| Emissivity | ADJUSTABLE, stated — "adjustable emissivity control to ensure reliable reading across diverse materials". This shelf's introduction explains why that is not optional: a shiny surface reports a temperature that is not its own, so a camera with a fixed emissivity reads bare copper and polished steel wrong by a wide margin. No numeric range is given; the Klein TI250 is the only camera on this shelf that publishes one |
| Display and format | NO SCREEN — the phone is the display. USB-C, working with iOS, Android and WINDOWS, and the listing states that Mac devices are NOT supported, which is the only compatibility exclusion published on this shelf. 52° × 39° field of view, 25 Hz refresh. 23 grams, the lightest camera here by nine grams |
| Connectivity and storage | None of its own: images and video live on the phone, through the RISION View app, which the listing states requires NO REGISTRATION. The app offers temperature threshold, picture-in-picture, spot, line and area analysis with real-time graphs and isotherm capture, and 12 color palettes — more palettes than anything else on this shelf |
| Also stated | AI "BiSpectrix" image fusion: the phone's own visible-light camera is aligned and fused with the thermal image in real time. That is a genuine advantage of the phone-attached format over a standalone body, because the visible camera is already there and is far better than the 2 MP sensors the standalone cameras here carry |
| Amazon reference | B0H9SGQKM1 |
| EAN | 4897155170087 |
At $139, it is the 1 cheapest of the 7 models in this category published here.
No, and this listing is unusually honest about it: "upscales the image to 320×240 QuadIR resolution from native 160×120". The detector has 160 by 120 elements, which is 19,200 real measurements. The 320 × 240 output is those 19,200 numbers interpolated into 76,800 pixels — four times as many pixels, no more information. Upscaling makes an image pleasanter to look at and does not let you resolve a smaller feature. This shelf's introduction calls the detector the only figure that describes what a camera can actually resolve, and here it is printed in the same bullet as the one that sells the camera.
On the detector, they are the same: 160 × 120, which Klein publishes as "19,200 pixels". On the figures beyond that, this one publishes more. It states 40 mK sensitivity where Klein states none, adjustable emissivity where Klein mentions none, a field of view and a refresh rate where Klein gives neither, and a 600 °C (1112 °F) ceiling against Klein's 400 °C (752 °F). What Klein gives you is a touch-screen interface, a time-lapse function, a case-thickness tolerance of a fifth of an inch, and a 160-year-old firm behind it.
Because the camera measures radiation and infers temperature, and how much radiation a surface emits at a given temperature depends on the surface. Matt black paint emits almost everything — emissivity near 0.95 — and bare polished copper emits about 0.05, mostly reflecting its surroundings instead. Point a camera with a fixed 0.95 setting at a bus bar at 80 °C (176 °F) and it may read 30. The fix is to set the emissivity for the material, or to stick a piece of matt tape on the shiny part and read that. A camera with no emissivity control cannot do the first.
Same category, nearby prices, between measuring instruments. What remains is the specifications every one publishes — half empty, a column is no use.
| Model | Price | Camera resolution | Stated accuracy | Connectivity and storage |
|---|---|---|---|---|
| RISION Phone thermal camera, 320 × 240 from 160 × 120 | $139 | 160 × 120 DETECTOR, stated plainly — "upscales the image to 320×240 QuadIR resolution from NATIVE 160×120". That is 19,200 real measured points, which is exactly what both Klein cameras on this shelf publish as "19,200 pixels" at $299.99 and $314.38. This shelf's introduction says the detector is the only figure that describes what a camera can resolve, and this is the cheapest 160 × 120 here by a factor of two | ±3.6 °F, which is ±2 °C (36 °F). The listing calls it "professional-grade", which it is not in the sense of a named standard, and the figure matches what the Raythink and both HSFTOOLS cameras state as ±2 °C (36 °F) or ±2% | None of its own: images and video live on the phone, through the RISION View app, which the listing states requires NO REGISTRATION. The app offers temperature threshold, picture-in-picture, spot, line and area analysis with real-time graphs and isotherm capture, and 12 color palettes — more palettes than anything else on this shelf |
| Raythink Dual-lens imager, 320 × 240 upscaled | $200 | "BOOSTS thermal resolution to 320x240 in real time", stated — and NO NATIVE DETECTOR FIGURE APPEARS ANYWHERE on the listing. That makes it the only camera on this shelf that publishes the upscaled number alone. This shelf's introduction is explicit: the detector resolution is the only figure that describes what a camera can actually resolve, and it is routinely buried under a larger image resolution produced by upscaling. Here it is not buried; it is absent. The word "boosts" tells you there is a smaller number and not what it is | ±2 °C (36 °F) or ±2%, stated. Along with the RISION's ±3.6 °F and the HSFTOOLS pair's max(±3.6 °F, ±2%), that is the figure five cameras on this shelf publish and both Kleins do not | 8 GB internal storage, wireless transfer to a mobile app, and WINDOWS PC SOFTWARE for real-time display, temperature analysis and data export. Automatic maximum, minimum and center points plus SIX customisable spots, and high and low alarms |
| FLIR ONE Gen 3, phone thermal camera | $214 | 80 × 60 detector · 1440 × 1080 image | ± 3 °C (37 °F) or ± 5% stated | USB-C Android |
| Klein Tools Phone thermal imager, 19,200 pixels | $300 | "19,200-PIXEL RESOLUTION", stated — as a COUNT and never as a grid. Nineteen thousand two hundred is 160 × 120, which is what the RISION on this shelf states explicitly for $139. This shelf's introduction lists resolutions as grids — 160 × 120, 256 × 192, 320 × 240 — because a grid tells you the shape of the image and a pixel count does not. This and its TI250 sibling are the only cameras on this shelf whose resolution is published in this form | NOT PUBLISHED. No tolerance figure of any kind appears on the listing, where five cameras on this shelf state ±2 °C (36 °F) or ±2% | Images and video are stored on the phone, including a TIME-LAPSE video feature, which nothing else on this shelf publishes. Three color palettes — ironbow, rainbow and greyscale — against 12 on the RISION, 9 on the Raythink and 7 or 8 on the HSFTOOLS pair |
Details checked on October 8, 2026.
A first thermal camera, where the phone is the screen and the detector matters more than the body
Amazon reports what buyers took in the month before this page was last checked: at least 400.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
Specifications: the manufacturer sheet for measuring instruments and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
256 × 192 px · −20 to +450 °C (842 °F) · IP54 · 2 m (7 ft) drop · dual power
A camera that quotes 256 × 192 with no upscaled figure beside it, in an IP54 body rated for a 2 m (7 ft) drop, running on a 12 V Li-ion pack or AA cells.
Best for: Site use, where the camera shares a bag with other tools and has to work on the first press.
80 × 60 detector · 1440 × 1080 image · ± 3 °C (37 °F) or ± 5% stated · USB-C Android
A phone-attached thermal camera whose listing states both numbers plainly: an 80 × 60 thermal detector behind a 1440 × 1080 displayed image, with accuracy given as ± 3 °C (37 °F) or ± 5%.
Best for: A first thermal camera for home inspection, where finding the cold spot matters more than resolving it finely.
≈ $214
256 × 192 DETECTOR stated, upscaled to 640 × 480 · VOx · under 40 mK, 0.04 °C (32 °F) · −4 to 752 °F (−20 to 400 °C) · max(±3.6 °F, ±2%) · emissivity AND distance adjustable · 3.5 in TOUCHSCREEN, the largest here · 8 MP visible cam — four times the Raythink and the F2VW · 5 image modes, 8 palettes · Wi-Fi + PC software with 3D plotting · 16 GB / 60,000 images / 54 h video · 4 h battery · IP54, 6.6 ft · $479
The most expensive camera on this shelf: the same 256 × 192 detector as the F2VW with a bigger touchscreen, four times the visible camera, and a lower temperature ceiling.
Best for: Reporting work, where the images go into a document and the 8 MP visible shot is half the evidence
≈ $479
