Technical background: what exactly is T2S?
T2S+, also known as T2S Pro, is a small and lightweight (≈18 g) thermal camera that connects directly to your smartphone (USB‑C or Lightning) and turns the screen into a thermal display.
IR sensor resolution: 256×192 pixels. The start field shows details such as the amplifier on the motherboard.
lens: Adjustable macro lens (8 mm) with manual focus, ideal for precise close-up images.
FOV (field of view): wide angle 44.9° × 33.4°, giving a panoramic perspective – less suitable for observing animals from a distance.
Refresh rate: smooth 25 Hz, no jamming.
Sensitivity (NETD): ≤ 40 mK, which means a real temperature difference even with a small temperature difference.
Measuring range: from –20 °C to +450 °C, with an accuracy of ±2 °C or ±2% (the higher value prevails).
Display and analytics: the Xtherm application allows you to measure temperature at a point, line or surface, select color scales (white-hot, black-hot, pseudo colors), record photos/videos, as well as statistics (max/min/center).
Network support: SDK support available for Android, Windows, Linux.
What Piflar says – user experience
Advantages:
The camera is extremely compact and does not require additional power - consumption is less than 0.35 W (powered by the phone).
The picture is clear, the processor is pleasantly responsive, and everything works instantly – plug-and-play elegance.
The macro lens translates the latent heat of electronics, is powered via USB‑C, no need to carry additional batteries.
The wide FOV allows for a clear analysis of insulation, windows, appliances – everything visible at a glance.
The app's capabilities (temperatures, video, images, color scales) are tangible and useful in everyday measurement situations.
Disadvantages:
Application Infrared currently not on the Play Store, requires loading from the page, which means less security and more work for inexperienced users.
Composing images with a macro lens is not suitable for distant objects or observing animals – the angle is too wide, it does not narrow down enough for a clear image.
Some users have reported problems changing the temperature range (450°C), but support and new apps solve this.
The application is not open source, which raises security questions, but Python scripts are accessible for advanced users.
Evaluation by criteria
| Criterion | Rating (★‑5) | Comment |
|---|---|---|
| Resolution & sensitivity | ★★★★☆ | Good macro image, but with a narrow FOV less suitable for measuring devices. |
| Speed and responsiveness | ★★★★★ | 25 Hz works smoothly without lag. |
| Ease of use | ★★★★☆ | Plug-and-play, but the application requires manual installation. |
| Measurement & analytics | ★★★★★ | Many ways to measure, statistics, functionality. |
| Portability | ★★★★★ | Small, lightweight and convenient for mobile use. |
| Value for money | ★★★★☆ | Industrial precision, but requires manual application installation. |
Nerd rating: 4.3 / 5 ⭐
Who do I recommend T2S to?
Ideal choice for:
Tech enthusiasts, electricians, service workers, computer hobbyists and DIYers who need an accurate thermal image - especially when inspecting PCBs, processors, insulation, etc.
Users looking for a compact solution with great potential, without additional power supply.
Not best suited for:
Photo enthusiasts for thermal imaging of wildlife or distant targets.
Those who expect easy installation through official app stores.
Buy a thermal camera from a nerd: T2S
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