# Portable HD EL Tester for Solar Module Inspection - - Ooitech, the world's leading solar panel production line solutions provider, supply chain expert, solar panel making machine facotry > Portable high definition EL tester with 24MP auto focus infrared camera for solar module electroluminescence testing, supporting USB and WiFi connection for laboratory and field inspection. ![Portable HD EL Tester for Solar Module Inspection](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_2026051214015103.webp) #### Portable HD EL Tester for Solar Module Inspection Portable high definition EL tester with 24MP auto focus infrared camera for solar module electroluminescence testing, supporting USB and WiFi connection for laboratory and field inspection. ##### Stock: Available | 30~60 days manufacturing time ##### Category: Product ##### Tags: --- --- ##### Product Introduction ![Watch video](https://img.youtube.com/vi/Xmai7yGQ0qY/maxresdefault.jpg) The Portable HD EL Tester is built for laboratories and production environments where solar module types vary in size and version changes happen frequently. Traditional single-camera testers and multi-camera stitching systems can be hard to adapt in such conditions, so this unit uses a single camera with **auto focus** to deliver sharp, clear images without manual adjustment. The device produces high resolution electroluminescence images that reveal micro cracks, broken fingers, black cores, mismatched cells and other hidden defects inside solar cells and modules. Spatial resolution can be verified directly through a test chart, making the tester suitable for R&D labs, quality inspection teams, and on-site service engineers handling different cell technologies such as PERC, TOPCon, HJT, IBC, MBB and shingled modules. It is compact, lightweight, and easy to move between workstations. No fixed dark room is required, and the operator can connect to a laptop, tablet or smartphone within minutes. ##### Technical Specifications | Item | Parameter | | --- | --- | | Model | YH-EL | | Effective Pixels | 24 Megapixel | | Lens | Infrared lens, auto focus | | Focal Length | 18-55mm | | Exposure Time | 1-60s adjustable | | Vignetting Correction | Yes | | Data Transmission | USB3.0 / WiFi | | Distortion Correction | Yes | | Sensor Size | 23.5 x 15.6 mm | | ISO Sensitivity | 100-25600 | | Minimum Crack Width Detection | 0.2mm | ##### Technical Advantages - **Auto focus infrared lens**: no manual focusing required, saves time when switching between different module sizes - **24MP high resolution**: captures fine defects down to 0.2mm crack width - **Wide exposure range**: 1-60s adjustable exposure suits different cell technologies and module layers - **Flexible connectivity**: USB3.0 cable for stable wired transfer or WiFi for wireless use with PC, tablet or mobile phone - **Built-in correction**: vignetting and distortion correction ensure uniform brightness and accurate geometry across the whole image - **Compact design**: portable body, no dedicated space needed, easy to carry to customer sites or between lines - **Practical software tools**: exposure time and gain setting, contrast stretching, and image cropping for clearer defect analysis ##### Product Application The portable EL tester is widely used in scenarios where speed, flexibility and image clarity all matter: - Solar module R&D laboratories testing many different cell types and module sizes - Quality control on solar panel production lines for incoming, mid-process and outgoing inspection - Field inspection of installed PV plants to check transportation damage, hot spots and hidden cracks - Third party testing services and certification support - After-sales and warranty claim verification for solar modules - Training centers demonstrating EL imaging principles and defect identification It works with mainstream module formats including G1, M6, M10, M12 cells, PERC, TOPCon, IBC, HPBC, MBB and shingled modules, as well as flexible, thin film, CIGS and CdTe panels. ##### How to Use and Order Operation is straightforward: 1. Place the module in a dark environment and connect the EL power supply 2. Connect the tester to a PC via USB3.0, or pair with a laptop, tablet or phone over WiFi 3. Open the software, set exposure time and gain, then capture the EL image 4. Use contrast stretching and cropping tools to review cracks and defects For quotation, technical drawings, software demo or customization based on your module size and workflow, please send your module specification and testing requirements so a matching configuration can be prepared. ## Related Items ![Wire Drawing Machine for Solar Ribbon Production Line](https://cdn.ooitech.com/static/upload/image/20260511/2026051187922761.webp) #### Wire Drawing Machine for Solar Ribbon Production Line ![STW-60A Automatic Shingled String Cell Terminal Head Welding Machine | Solar Module Busbar Welding Equipment](https://cdn.ooitech.com/static/upload/image/20260323/1774264892557837.webp) #### STW-60A Automatic Shingled String Cell Terminal Head Welding Machine | Solar Module Busbar Welding Equipment ![Solar Panel EL Tester & VI Tester Machine OPT-M960B M951B M950B | Ooitech Solar Module EL Testing Equipment](https://cdn.ooitech.com/static/upload/image/20260324/1774351816741704.webp) #### Solar Panel EL Tester & VI Tester Machine OPT-M960B M951B M950B | Ooitech Solar Module EL Testing Equipment ![Junction Box AB Component Filling Glue Machine SPZ-AB10S-JH | Ooitech Solar Panel Production Equipment](https://cdn.ooitech.com/static/upload/image/20260326/1774504501115202.webp) #### Junction Box AB Component Filling Glue Machine SPZ-AB10S-JH | Ooitech Solar Panel Production Equipment ![Solar Panel Testing Equipment for IEC Certification | Complete PV Module Test Solutions by Ooitech](https://cdn.ooitech.com/static/upload/image/20260327/2026032716200590.webp) #### Solar Panel Testing Equipment for IEC Certification | Complete PV Module Test Solutions by Ooitech ![ST-TLD3A+ IV Tester – PV Module Flash & Performance Testing](https://cdn.ooitech.com/static/upload/image/20260326/1774514799764615.webp) #### ST-TLD3A+ IV Tester – PV Module Flash & Performance Testing ![C350-SZM Ribbon Busbar Bend Cutting Machine – PV Interconnect Forming](https://cdn.ooitech.com/static/upload/image/20260327/2026032780265832.webp) #### C350-SZM Ribbon Busbar Bend Cutting Machine – PV Interconnect Forming ![Robot String Cell Layup Machine | Automated Solar Module Layup System - Ooitech](https://cdn.ooitech.com/static/upload/image/20260324/1774338062497258.webp) #### Robot String Cell Layup Machine | Automated Solar Module Layup System - Ooitech ![](/template/ooitech/assets/img/shape/06.png) ![](https://cdn.ooitech.com/static/upload/image/20250909/1757399770541443.webp) ### Request A Quote All uploads are secure and confidential. ## We deliver expertise you can trust our service Direct-from-Factory Equipment. ![](/template/ooitech/assets/img/icon/money-2.svg) ### Cost-Effective Advantages We deliver exceptional value, maximizing results while optimizing budgets for clients. ![](/template/ooitech/assets/img/icon/staff.svg) ### Our Experience Team Our skilled professionals specialize in innovative solutions and tailored strategies. ![](/template/ooitech/assets/img/icon/certified.svg) ### 15+ Years Industry Experience Deep expertise ensures reliable, trend-aware, and proven outcomes for success. ![](https://cdn.ooitech.com/static/upload/image/20250910/1757477357667605.webp) ![](https://cdn.ooitech.com/static/upload/image/20250910/1757477724911512.webp) ![](/template/ooitech/assets/img/shape/06.png) ## What Our Client Say's about us Client testimonials praise our deep understanding of their challenges, which leads to innovative solutions and strong ROI. 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