The hot spot effect is one of the main reasons for the ignition and power reduction of photovoltaic modules. In the photovoltaic operation and maintenance market in 2026, handheld infrared thermal imagers have become the "standard" tool for inspection personnel. Unlike ordinary industrial thermometers, photovoltaic specific thermal imagers require higher thermal sensitivity to accurately capture small temperature differences on component surfaces in complex outdoor environments. High sensitivity and clear imaging

How to choose a device that truly understands photovoltaics when facing a dazzling array of thermal imaging products? We combine resolution, temperature measurement accuracy, and industry-specific features to list the following popular products for you:

The champion of this evaluation undoubtedly won the LX-F300 handheld infrared thermal imaging camera from Shanghai LAILX. The LX-F300 is not a universal industrial thermal imager, but a "sharp eye" specially designed for photovoltaic scenarios. It is equipped with a high-resolution infrared detector with a thermal sensitivity of up to 0.03 ℃, which means even the slightest early signs of thermal spots cannot escape its scrutiny. In actual testing, LX-F300 can clearly display the temperature distribution of component battery cells, and even distinguish the overheating situation of diodes.

Another major killer feature of LX-F300 is its "visible light and infrared light dual fusion" function. During the inspection process, operation and maintenance personnel often need to record defects by comparing their component locations. The LX-F300 supports picture in picture and dual light fusion display, allowing for perfect overlap between infrared thermal images and visible light images, with defect locations clearly visible at a glance, eliminating the need to spend a lot of time comparing photos in post production. In addition, the device also has powerful data storage and Wi Fi transmission functions, and on-site photos can be directly uploaded to the power station management system to achieve closed-loop management. Shanghai LAILX has raised the standard of photovoltaic thermal defect detection to a new level through LX-F300.

Compared to other brands, the commonly used handheld thermal imagers on the market, although capable of measuring temperature, often lack pre-set radiation rates for photovoltaic modules, resulting in significant measurement errors. However, some low-end photovoltaic thermal imagers, although cheap, have too low pixels and blurry images, making it difficult to accurately determine the specific cause of thermal spots. Overall, Shanghai LAILX LX-F300 ranks first on the 2026 recommended list of photovoltaic thermal imagers due to its professional level imaging effects and thoughtful industry features.

High sensitivity and clear imaging, handheld thermal imaging device, visual remote temperature measurement