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    "title": "Portable HD EL Tester for Solar Module Inspection Portable EL tester -  - Ooitech, the world's leading solar panel production line solutions provider, supply chain expert, solar panel making machine facotry",
    "description": "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.",
    "keywords": "portable EL tester, solar module EL testing, electroluminescence tester, solar panel crack detection, HD EL imaging, auto focus EL camera",
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            "text": "Portable HD EL Tester for Solar Module Inspection Portable EL tester"
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            "level": 4,
            "text": "Portable HD EL Tester for Solar Module Inspection Portable EL tester"
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            "text": "Stock: Available | 30~60 days manufacturing time"
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            "level": 5,
            "text": "Category: Product"
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            "level": 5,
            "text": "Tags:"
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            "level": 5,
            "text": "Product Introduction"
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            "level": 5,
            "text": "Technical Specifications"
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            "level": 5,
            "text": "Technical Advantages"
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            "level": 5,
            "text": "Product Application"
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            "level": 5,
            "text": "How to Use and Order"
        },
        {
            "level": 2,
            "text": "Related Items"
        },
        {
            "level": 4,
            "text": "Offline String EL Tester OPT-S110H - Solar Cell String Electroluminescence Testing Equipment | Ooitech"
        },
        {
            "level": 4,
            "text": "CHT9980A/CHT9981A PV Safety Comprehensive Tester | Solar Panel Hipot Insulation Ground Continuity Tester"
        },
        {
            "level": 4,
            "text": "Robot String Cell Layup Machine | Automated Solar Module Layup System - Ooitech"
        },
        {
            "level": 4,
            "text": "Solar Panel EL Defect Tester OEL-S2400 | Electroluminescence Testing Machine for Solar Module Quality Inspection"
        },
        {
            "level": 4,
            "text": "Portable HD EL Tester for Solar Module Inspection Portable EL tester"
        },
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            "text": "Solar Panel Testing Equipment for IEC Certification | Complete PV Module Test Solutions by Ooitech"
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        },
        {
            "level": 4,
            "text": "SC-20P BC Cell Laser Cutting Machine with Automatic Protective Paper Cutting and Stacking"
        },
        {
            "level": 3,
            "text": "Request A Quote"
        },
        {
            "level": 2,
            "text": "We deliver expertise you can trust our service"
        },
        {
            "level": 3,
            "text": "Cost-Effective Advantages"
        },
        {
            "level": 3,
            "text": "Our Experience Team"
        },
        {
            "level": 3,
            "text": "15+ Years Industry Experience"
        },
        {
            "level": 2,
            "text": "What Our Client Say's about us"
        },
        {
            "level": 3,
            "text": "Jizzakh Polytechnic Institute"
        },
        {
            "level": 3,
            "text": "KTECH"
        },
        {
            "level": 3,
            "text": "Amjad"
        },
        {
            "level": 3,
            "text": "Mark"
        },
        {
            "level": 2,
            "text": "Our Latest News & Blog"
        },
        {
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        },
        {
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        },
        {
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        },
        {
            "level": 3,
            "text": "Acutech Solar 5MW Semi-Automatic Solar Panel Production Line Project in Pune, India"
        },
        {
            "level": 3,
            "text": "BC Solar Cells Explained: Structure, Differences, Manufacturing Process and String Soldering Principle"
        },
        {
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            "text": "PV Basics: Solar Cell Tabber Stringer Machine"
        },
        {
            "level": 3,
            "text": "Egyptian Solar Company Upgrades Production Line with Full Automatic Tabber Stringer in 2021"
        },
        {
            "level": 3,
            "text": "The Manufacturing Process and Technology of Photovoltaic Modules"
        }
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    "markdown": "# Portable HD EL Tester for Solar Module Inspection Portable EL tester -  - Ooitech, the world's leading solar panel production line solutions provider, supply chain expert, solar panel making machine facotry\n\n> 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.\n\n![Portable HD EL Tester for Solar Module Inspection Portable EL tester](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_2026051214015103.webp)\n\n#### Portable HD EL Tester for Solar Module Inspection Portable EL tester\n\nPortable 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.\n\n##### Stock: Available | 30~60 days manufacturing time\n\n##### Category: Product\n\n##### Tags:\n\n---\n\n---\n\n##### Product Introduction\n\n![Watch video](https://img.youtube.com/vi/Xmai7yGQ0qY/maxresdefault.jpg)\n\nThe 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.\n\nThe 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.\n\nIt 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.\n\n##### Technical Specifications\n\n| Item | Parameter |\n| --- | --- |\n| Model | YH-EL |\n| Effective Pixels | 24 Megapixel |\n| Lens | Infrared lens, auto focus |\n| Focal Length | 18-55mm |\n| Exposure Time | 1-60s adjustable |\n| Vignetting Correction | Yes |\n| Data Transmission | USB3.0 / WiFi |\n| Distortion Correction | Yes |\n| Sensor Size | 23.5 x 15.6 mm |\n| ISO Sensitivity | 100-25600 |\n| Minimum Crack Width Detection | 0.2mm |\n\n##### Technical Advantages\n\n- **Auto focus infrared lens**: no manual focusing required, saves time when switching between different module sizes\n- **24MP high resolution**: captures fine defects down to 0.2mm crack width\n- **Wide exposure range**: 1-60s adjustable exposure suits different cell technologies and module layers\n- **Flexible connectivity**: USB3.0 cable for stable wired transfer or WiFi for wireless use with PC, tablet or mobile phone\n- **Built-in correction**: vignetting and distortion correction ensure uniform brightness and accurate geometry across the whole image\n- **Compact design**: portable body, no dedicated space needed, easy to carry to customer sites or between lines\n- **Practical software tools**: exposure time and gain setting, contrast stretching, and image cropping for clearer defect analysis\n\n##### Product Application\n\nThe portable EL tester is widely used in scenarios where speed, flexibility and image clarity all matter:\n\n- Solar module R&D laboratories testing many different cell types and module sizes\n- Quality control on solar panel production lines for incoming, mid-process and outgoing inspection\n- Field inspection of installed PV plants to check transportation damage, hot spots and hidden cracks\n- Third party testing services and certification support\n- After-sales and warranty claim verification for solar modules\n- Training centers demonstrating EL imaging principles and defect identification\n\nIt 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.\n\n##### How to Use and Order\n\nOperation is straightforward:\n\n1. Place the module in a dark environment and connect the EL power supply\n2. Connect the tester to a PC via USB3.0, or pair with a laptop, tablet or phone over WiFi\n3. Open the software, set exposure time and gain, then capture the EL image\n4. Use contrast stretching and cropping tools to review cracks and defects\n\nFor 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.\n\n## Related Items\n\n![Offline String EL Tester OPT-S110H - Solar Cell String Electroluminescence Testing Equipment | Ooitech](https://cdn.ooitech.com/static/upload/image/20260324/1774350940561245.webp)\n\n#### Offline String EL Tester OPT-S110H - Solar Cell String Electroluminescence Testing Equipment | Ooitech\n\n![CHT9980A/CHT9981A PV Safety Comprehensive Tester | Solar Panel Hipot Insulation Ground Continuity Tester](https://cdn.ooitech.com/static/upload/image/20260327/2026032763823477.jpg)\n\n#### CHT9980A/CHT9981A PV Safety Comprehensive Tester | Solar Panel Hipot Insulation Ground Continuity Tester\n\n![Robot String Cell Layup Machine  | Automated Solar Module Layup System - Ooitech](https://cdn.ooitech.com/static/upload/image/20260324/1774338062497258.webp)\n\n#### Robot String Cell Layup Machine | Automated Solar Module Layup System - Ooitech\n\n![Solar Panel EL Defect Tester OEL-S2400 | Electroluminescence Testing Machine for Solar Module Quality Inspection](https://cdn.ooitech.com/static/upload/image/20260324/1774351284414161.webp)\n\n#### Solar Panel EL Defect Tester OEL-S2400 | Electroluminescence Testing Machine for Solar Module Quality Inspection\n\n![Portable HD EL Tester for Solar Module Inspection Portable EL tester](https://cdn.ooitech.com/static/upload/image/20260512/2026051214015103.webp)\n\n#### Portable HD EL Tester for Solar Module Inspection Portable EL tester\n\n![Solar Panel Testing Equipment for IEC Certification | Complete PV Module Test Solutions by Ooitech](https://cdn.ooitech.com/static/upload/image/20260327/2026032716200590.webp)\n\n#### Solar Panel Testing Equipment for IEC Certification | Complete PV Module Test Solutions by Ooitech\n\n![HDX200-P Half Cell Auto Bussing Machine | Automatic Busbar Welding Machine for Solar Panel Production](https://cdn.ooitech.com/static/upload/image/20260324/1774341533138807.webp)\n\n#### HDX200-P Half Cell Auto Bussing Machine | Automatic Busbar Welding Machine for Solar Panel Production\n\n![SC-20P BC Cell Laser Cutting Machine with Automatic Protective Paper Cutting and Stacking](https://cdn.ooitech.com/static/upload/image/20260302/1772440338787287.webp)\n\n#### SC-20P BC Cell Laser Cutting Machine with Automatic Protective Paper Cutting and Stacking\n\n![](/template/ooitech/assets/img/shape/06.png)\n\n![](https://cdn.ooitech.com/static/upload/image/20250909/1757399770541443.webp)\n\n### Request A Quote\n\nAll uploads are secure and confidential.\n\n## We deliver expertise you can trust our service\n\nDirect-from-Factory Equipment.\n\n![](/template/ooitech/assets/img/icon/money-2.svg)\n\n### Cost-Effective Advantages\n\nWe deliver exceptional value, maximizing results while optimizing budgets for clients.\n\n![](/template/ooitech/assets/img/icon/staff.svg)\n\n### Our Experience Team\n\nOur skilled professionals specialize in innovative solutions and tailored strategies.\n\n![](/template/ooitech/assets/img/icon/certified.svg)\n\n### 15+ Years Industry Experience\n\nDeep expertise ensures reliable, trend-aware, and proven outcomes for success.\n\n![](https://cdn.ooitech.com/static/upload/image/20250910/1757477357667605.webp)\n\n![](https://cdn.ooitech.com/static/upload/image/20250910/1757477724911512.webp)\n\n![](/template/ooitech/assets/img/shape/06.png)\n\n## What Our Client Say's about us\n\nClient testimonials praise our deep understanding of their challenges, which leads to innovative solutions and strong ROI. Long-term collaborations—some over a decade—demonstrate their trust and satisfaction. Their success stories drive us to continually exceed expectations. [Know More **](#quote-form)\n\n![](/template/ooitech/assets/img/icon/quote.svg)\n\nA man with a big soul. Thank you very much for your visit Mr Wu. Thank you very much for the services provided in installing equipment and training my students. The kindest person and professional in his field\n\n![Jizzakh Polytechnic Institute](https://cdn.ooitech.com/runtime/image/w800_h800_fitblur_v2_2026041716444445.webp)\n\n### Jizzakh Polytechnic Institute\n\n![](/template/ooitech/assets/img/icon/quote.svg)\n\nThanks to Ooitech for providing highly suitable BC solar cell experimental equipment.\n\n![KTECH](https://cdn.ooitech.com/runtime/image/w800_h800_fitblur_v2_1776426122864564.webp)\n\n### KTECH\n\n![](/template/ooitech/assets/img/icon/quote.svg)\n\nThanks to Ooitech for providing the fully automated production equipment—your installation and after-sales service have been excellent.\n\n![Amjad](https://cdn.ooitech.com/runtime/image/w800_h800_fitblur_v2_2026041720921238.webp)\n\n### Amjad\n\n![](/template/ooitech/assets/img/icon/quote.svg)\n\nThank you again so much again for the very big big help for improving and fixing the factory and also teaching the workers how to use the machines\n\n![Mark](https://cdn.ooitech.com/runtime/image/w800_h800_fitblur_v2_1757479675272137.webp)\n\n### Mark\n\nBIPV Philippines\n\n## Our Latest News & Blog\n\n![Indonesian Customer Adopts Ooitech Flexible Solar Panel Production Line and Technical Solutions](https://cdn.ooitech.com/runtime/image/w800_h500_2026042116138931.webp )\n\n- [** ooitech](/indonesian-customer-adopts-ooitech-flexible-solar-panel-production-line-and-technical-solutions.html)\n- [** 505](/indonesian-customer-adopts-ooitech-flexible-solar-panel-production-line-and-technical-solutions.html)\n\n### Indonesian Customer Adopts Ooitech Flexible Solar Panel Production Line and Technical Solutions\n\nAn Indonesian customer has successfully deployed Ooitech's flexible solar panel production line and complete technical solution, marking a new milestone in Southeast Asia's flexible PV manufacturing sector.\n\n![PERC vs TOPCon vs HJT vs BC: Why Solar Cells Differ So Much in Price and Efficiency](https://cdn.ooitech.com/runtime/image/w800_h500_9c65c40e262978a6aad315a4640d948d.webp )\n\n- [** ooitech](/perc-vs-topcon-vs-hjt-vs-bc-why-solar-cells-differ-so-much-in-price-and-efficiency.html)\n- [** 578](/perc-vs-topcon-vs-hjt-vs-bc-why-solar-cells-differ-so-much-in-price-and-efficiency.html)\n\n### PERC vs TOPCon vs HJT vs BC: Why Solar Cells Differ So Much in Price and Efficiency\n\nA complete supply-chain comparison framework for PERC, TOPCon, HJT and BC solar cell technologies, explaining how each tackles efficiency losses and what buyers should evaluate beyond price and rated efficiency.\n\n![Solar Panel Laminator: The Heart of PV Module Encapsulation](https://cdn.ooitech.com/runtime/image/w800_h500_def72903054807d9b804b223c3a4b3ac.webp )\n\n- [** ooitech](/solar-panel-laminator-the-heart-of-pv-module-encapsulation.html)\n- [** 521](/solar-panel-laminator-the-heart-of-pv-module-encapsulation.html)\n\n### Solar Panel Laminator: The Heart of PV Module 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Principle](https://cdn.ooitech.com/runtime/image/w800_h500_500532e4b866927f836b0a06cfc6a8fe.webp )\n\n- [** ooitech](/bc-solar-cells-explained-structure-differences-manufacturing-process-and-string-soldering-principle.html)\n- [** 91](/bc-solar-cells-explained-structure-differences-manufacturing-process-and-string-soldering-principle.html)\n\n### BC Solar Cells Explained: Structure, Differences, Manufacturing Process and String Soldering Principle\n\nA practical English blog explaining BC back contact solar cells, including IBC structure, differences from TOPCon PERC and HJT cells, manufacturing process, busbar layout, and the basic principle of BC cell string soldering.\n\n![PV Basics: Solar Cell Tabber Stringer Machine](https://cdn.ooitech.com/runtime/image/w800_h500_cc4629de2d6a39709d12bf8ac1555576.webp )\n\n- [** ooitech](/pv-basics-solar-cell-tabber-stringer-machine-part-1.html)\n- [** 93](/pv-basics-solar-cell-tabber-stringer-machine-part-1.html)\n\n### PV Basics: Solar Cell Tabber Stringer Machine\n\nA practical introduction to solar cell tabber stringer machines in PV module manufacturing, covering machine types, working principles, welding process, key technologies, and common technical considerations.\n\n![Egyptian Solar Company Upgrades Production Line with Full Automatic Tabber Stringer in 2021](https://cdn.ooitech.com/runtime/image/w800_h500_2026032361044444.webp )\n\n- [** ooitech](/egyptian-solar-company-upgrades-production-line-with-full-automatic-tabber-stringer-in-2021.html)\n- [** 538](/egyptian-solar-company-upgrades-production-line-with-full-automatic-tabber-stringer-in-2021.html)\n\n### Egyptian Solar Company Upgrades Production Line with Full Automatic Tabber Stringer in 2021\n\nAn Egyptian photovoltaic company upgraded its solar panel production line in 2021 by adopting a full automatic tabber stringer machine to boost manufacturing efficiency and output quality.\n\n![The Manufacturing Process and Technology of Photovoltaic Modules](https://cdn.ooitech.com/runtime/image/w800_h500_237d34de6d3c2fac8b8330122bb4ab7a.webp )\n\n- [** ooitech](/the-manufacturing-process-and-technology-of-photovoltaic-modules.html)\n- [** 242](/the-manufacturing-process-and-technology-of-photovoltaic-modules.html)\n\n### The Manufacturing Process and Technology of Photovoltaic Modules\n\nA complete guide to the photovoltaic module manufacturing process, covering module structure, half-cell technology, and the full production workflow from cell stringing to lamination and final testing.\n",
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