Klein Tools · segment S2
Klein Tools TI290
€€€€
320 × 240 native thermal sensor, NETD not published by the manufacturer mK, 9 Hz.
An American general tool brand, not a thermal specialist. Klein Tools is known for its pliers and electrician's screwdrivers; the TI290 is a recent diversification into instrumentation, unlike the ten other brands in this comparison that specialize in thermography.
Two advertised resolutions depending on the source, with neither ever confirmed as the sensor's. Klein Tools' own listing and Amazon both mention "over 76,800 pixels", while several independent retailers and some pages from the same manufacturer advertise "over 49,000 pixels" for the same product. 76,800 corresponds to a 320 × 240 sensor, 49,152 to a 256 × 192 sensor. That's a difference in kind, not rounding, and a buyer cannot tell which is real from retailer listings alone. A third-party datasheet cites a 480 × 320 screen, which suggests the native sensor is 320 × 240 and that the 49,000 figure may stem from confusion with an earlier model or a production variant. Value used here out of caution: 320 × 240, to be confirmed.
Specifications
Values come from manufacturer documentation unless otherwise noted in the sources at the bottom of the page. This device has not been physically tested.
| Brand | Klein Tools |
|---|---|
| Model | TI290 |
| Series | TI |
| Release year | not published by the manufacturer |
| Commercial status | current |
| EAN code | not published by the manufacturer |
| Manufacturer reference | TI290 |
| Segment | S2 |
| Form factor | standalone handheld camera |
| Native resolution, width (px) | 320 |
|---|---|
| Native resolution, height (px) | 240 |
| Native detector pixels | 76800 |
| Displayed resolution, width (px) | 480 |
| Displayed resolution, height (px) | 320 |
| Interpolation ratio | 2.0 |
| Interpolation method | software |
| Detector type | uncooled microbolometer |
| Detector material | not published by the manufacturer |
| Pixel pitch (µm) | not published by the manufacturer |
| Spectral band, min (µm) | not published by the manufacturer |
| Spectral band, max (µm) | not published by the manufacturer |
| NETD (mK) | not published by the manufacturer |
| NETD measurement conditions | not published by the manufacturer |
| Frame rate (Hz) | 9 |
| Horizontal field of view (°) | not published by the manufacturer |
|---|---|
| Vertical field of view (°) | not published by the manufacturer |
| Advertised IFOV (mrad) | not published by the manufacturer |
| Minimum focus distance (m) | not published by the manufacturer |
| Focus | fixed |
| Interchangeable lenses | no |
| Digital zoom (×) | not published by the manufacturer |
| Availability | no |
|---|---|
| Reference | not applicable |
| Working distance (mm) | not applicable |
| Spot size (µm) | not applicable |
| Smallest measurable area (µm) | not applicable |
| Accuracy with macro (°C) | not applicable |
| Range max with macro (°C) | not applicable |
| Range min (°C) | -20 |
|---|---|
| Range max (°C) | 400 |
| Absolute accuracy (°C) | not published by the manufacturer |
| Relative accuracy (%) | not published by the manufacturer |
| Emissivity setting | continuous |
| Reflected temperature correction | not published by the manufacturer |
| Measurement modes | 2 |
| Simultaneous cursors | 2 |
| Full radiometry | not published by the manufacturer |
| Visible camera (MP) | not published by the manufacturer |
|---|---|
| Image fusion | no |
| LED light | not published by the manufacturer |
| Laser pointer | no |
| Screen (inches) | not published by the manufacturer |
|---|---|
| Screen resolution | not published by the manufacturer |
| Touchscreen | no |
| Weight (g) | not published by the manufacturer |
| Dimensions (mm) | not published by the manufacturer |
| IP rating | not published by the manufacturer |
| Drop resistance (m) | 2 |
| Operating temperature, min (°C) | not published by the manufacturer |
| Operating temperature, max (°C) | not published by the manufacturer |
| Power type | built-in battery |
|---|---|
| Battery system | not applicable |
| Battery life (h) | not published by the manufacturer |
| Charging connector | USB-C |
| Internal memory (GB) | not published by the manufacturer |
|---|---|
| Memory card | microSD |
| Wi-Fi | yes |
| Bluetooth | not published by the manufacturer |
| Wired interface | USB-C |
| File formats | not published by the manufacturer |
| PC software | not published by the manufacturer |
|---|---|
| Free PC software | not published by the manufacturer |
| Mobile app | Klein Tools (iOS et Android) |
| Report generation | not published by the manufacturer |
| Cloud service | not published by the manufacturer |
| Calibration certificate provided | not published by the manufacturer |
|---|---|
| Declared standards | not published by the manufacturer |
| Warranty (months) | not published by the manufacturer |
| Support in France | not published by the manufacturer |
Observations
- NO NETD VALUE PUBLISHED ANYWHERE, in any of the sources consulted, even though it's the first figure a thermographer looks for.
- Continuously adjustable emissivity, from 0.01 to 0.99.
- A 9 Hz frame rate, consistent with export restrictions, though not explicitly mentioned by the manufacturer unlike FLIR and Fluke.
- Neither weight, nor dimensions, nor IP rating, nor field of view are published.
Sources
- resolution 76,800 pixels — source M
Klein Tools — product page TI290 (accessed September 14, 2026) - resolution 49,000 pixels — discrepancy found — source T
Tool Nut — page TI290, 49 000 pixels (accessed September 14, 2026) - screen resolution 480×320, 9 Hz frame rate — source T
Test Equipment Depot — page TI290 (accessed September 14, 2026) - emissivity, measurement range, drop warranty — source T
Amazon — page Klein Tools TI290 (accessed September 14, 2026)