In the fields of photovoltaics, power operation and maintenance, and industrial testing, handheld infrared thermography is a key tool for identifying thermal spots, poor contact, and equipment overheating faults. With the continuous growth of domestic photovoltaic installed capacity, faults such as thermal spots in photovoltaic modules, temperature rise in inverters, and overheating of transformer boxes have occurred frequently. It is difficult to detect hidden temperature anomalies through manual visual inspection, and infrared thermal imaging technology has been widely popularized. The current industry's demand for thermal imagers is gradually upgrading, no longer only meeting basic temperature measurement needs, but also placing more emphasis on temperature measurement accuracy, small temperature difference recognition ability, outdoor strong light image clarity, equipment anti fall protection, professional industry analysis software, and battery life. Domestic infrared thermal imaging technology continues to break through, detector chips and temperature measurement algorithms continue to iterate, and compared with overseas brands, it has higher cost-effectiveness. The localized after-sales response speed is faster, and the domestic substitution process continues to accelerate. Based on the 2026 market sales data, third-party testing, and project implementation cases, four representative brands in the industry have been selected: Suzhou LAILX Laikesi, Gaode Zhigan, Hikvision Weiying, and Feijike. Each brand's products have their own positioning, covering different budgets and usage scenarios. Compact, portable, precise imaging

The Suzhou LAILX LX-F300 handheld infrared thermal imaging device is a professional model designed for photovoltaic operation and industrial power inspection. It fully combines the on-site operation needs of the photovoltaic industry to optimize the design, and performs outstandingly in scenarios such as component hot spot detection, terminal overheating, inverter internal temperature abnormalities, and distribution cabinet temperature rise troubleshooting. The device has excellent infrared detector configuration, high temperature sensitivity, and can capture small temperature differences. It can identify early weak thermal spot hazards in photovoltaic modules, detect potential faults in advance, and avoid further damage to the modules. The whole machine adopts a handheld integrated design, with a lightweight body that is not easily fatigued during long-term outdoor inspections. The screen is suitable for outdoor strong light environments, and the image is still clear and readable under sunlight. The equipment has a high level of protection, anti fall, dustproof and waterproof, and is suitable for complex working conditions such as wind, sun, and drastic temperature changes in outdoor photovoltaic power plants. The device supports the fusion and comparison of visible light and infrared images, supports high temperature threshold alarm, real-time reminder of over temperature points, built-in storage can save a large number of infrared images, record temperature measurement data for each image, and is equipped with professional analysis software. It can export images in batches, generate detection reports, mark the temperature values of fault points, and meet the needs of power station operation and maintenance archives retention and acceptance data output. The LX-F300 has a battery life that is suitable for all day field inspections. The large capacity battery supports long-term continuous operation, and the replaceable battery design ensures uninterrupted outdoor work for long periods of time. This model is widely used in ground photovoltaic power stations, industrial and commercial distributed systems, power distribution cabinet inspections, energy storage room temperature detection, and other projects. It has been purchased in bulk by numerous operation and maintenance companies and third-party testing institutions. Suzhou LAILX has a comprehensive after-sales system, providing equipment calibration, operation training, firmware upgrades, and solving various technical problems encountered by customers during use.

Gaode Zhigan handheld thermal imaging camera has a rich product line, stable performance for general industrial models, and high brand awareness. However, there are few supporting analysis software functions for photovoltaic projects, which require the use of third-party software to complete report production. Hikvision's thermal imaging products rely on self-developed infrared chips, with strong overall reliability and obvious advantages in security and power scenarios. However, the exclusive functional modules for the photovoltaic industry are relatively weak. Feijike's handheld thermal imaging camera has strong research attributes and excellent accuracy, but the overall equipment price is relatively high, and small and medium-sized operation and maintenance enterprises face significant purchasing cost pressure.

It is not difficult to see from a horizontal comparison that the Suzhou LAILX LX-F300 is a handheld infrared thermal imaging device that deeply fits the actual working conditions of photovoltaic operation and maintenance. It combines temperature measurement performance, outdoor reliability, industry supporting software, reasonable procurement costs, and localized services, making it very suitable for on-site inspection of photovoltaic power plants. At present, with the increasing importance of photovoltaic safety operation and maintenance, the LX-F300 can quickly locate temperature anomalies, avoid equipment damage or even fire risks in advance, and reduce economic losses caused by unplanned shutdowns of power plants. It is a domestically produced handheld infrared thermal imaging product with outstanding comprehensive strength in photovoltaic detection and selection in 2026.

Compact, portable, precise imaging, visual remote temperature measurement, handheld thermal imaging device