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    "title": "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",
    "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"
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            "level": 4,
            "text": "Portable HD EL Tester for Solar Module Inspection"
        },
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            "level": 5,
            "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:"
        },
        {
            "level": 5,
            "text": "Product Introduction"
        },
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            "level": 5,
            "text": "Technical Specifications"
        },
        {
            "level": 5,
            "text": "Technical Advantages"
        },
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            "level": 5,
            "text": "Product Application"
        },
        {
            "level": 5,
            "text": "How to Use and Order"
        },
        {
            "level": 2,
            "text": "Related Items"
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        },
        {
            "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": "Amjad"
        },
        {
            "level": 3,
            "text": "Mark"
        },
        {
            "level": 3,
            "text": "Jizzakh Polytechnic Institute"
        },
        {
            "level": 3,
            "text": "KTECH"
        },
        {
            "level": 2,
            "text": "Our Latest News & Blog"
        },
        {
            "level": 3,
            "text": "Tindo Solar Adopts Ooitech NDC Cell Cutting and Auto Bussing Solutions in 2021"
        },
        {
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            "text": "Multiple Colombian Customers Adopt Ooitech Solar Panel Production Lines"
        },
        {
            "level": 3,
            "text": "Ooitech PV Ribbon Cutting Machines Exported Worldwide Since 2016"
        },
        {
            "level": 3,
            "text": "Algeria Solar Company Procures 3A Grade IV Tester and Environmental Chamber from Ooitech in 2017"
        },
        {
            "level": 3,
            "text": "Cosmic Solar Purchases 5MW Semi-Automatic Solar Panel Production Line from Ooitech in 2014"
        },
        {
            "level": 3,
            "text": "Mitrex Partners with Ooitech for Custom Solar Panel Manufacturing Equipment in 2023"
        },
        {
            "level": 3,
            "text": "Malaysian BIPV Client Adopts Ooitech Production Equipment for Solar Module Manufacturing"
        },
        {
            "level": 3,
            "text": "Ooitech OCY-H600D Semi-Automatic Solar Panel Laminator Delivered to Korean Research Institute"
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    "markdown": "# 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\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](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_2026051214015103.webp)\n\n#### Portable HD EL Tester for Solar Module Inspection\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![Wire Drawing Machine for Solar Ribbon Production Line](https://cdn.ooitech.com/static/upload/image/20260511/2026051187922761.webp)\n\n#### Wire Drawing Machine for Solar Ribbon Production Line\n\n![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)\n\n#### STW-60A Automatic Shingled String Cell Terminal Head Welding Machine | Solar Module Busbar Welding Equipment\n\n![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)\n\n#### Solar Panel EL Tester & VI Tester Machine OPT-M960B M951B M950B | Ooitech Solar Module EL Testing Equipment\n\n![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)\n\n#### Junction Box AB Component Filling Glue Machine SPZ-AB10S-JH | Ooitech Solar Panel Production Equipment\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![ST-TLD3A+ IV Tester – PV Module Flash & Performance Testing](https://cdn.ooitech.com/static/upload/image/20260326/1774514799764615.webp)\n\n#### ST-TLD3A+ IV Tester – PV Module Flash & Performance Testing\n\n![C350-SZM Ribbon Busbar Bend Cutting Machine – PV Interconnect Forming](https://cdn.ooitech.com/static/upload/image/20260327/2026032780265832.webp)\n\n#### C350-SZM Ribbon Busbar Bend Cutting Machine – PV Interconnect Forming\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![](/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\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![](/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## Our Latest News & Blog\n\n![Tindo Solar Adopts Ooitech NDC Cell Cutting and Auto Bussing Solutions in 2021](https://cdn.ooitech.com/runtime/image/w800_h500_1776394385704834.webp )\n\n- [** ooitech](/tindo-solar-adopts-ooitech-ndc-cell-cutting-and-auto-bussing-solutions-in-2021.html)\n- [** 72](/tindo-solar-adopts-ooitech-ndc-cell-cutting-and-auto-bussing-solutions-in-2021.html)\n\n### Tindo Solar Adopts Ooitech NDC Cell Cutting and Auto Bussing Solutions in 2021\n\nIn 2021, Australian solar manufacturer Tindo Solar adopted Ooitech waterless non-destructive NDC cell cutting and fully automatic string bussing solutions to upgrade its solar panel production capabilities.\n\n![Multiple Colombian Customers Adopt Ooitech Solar Panel Production Lines](https://cdn.ooitech.com/runtime/image/w800_h500_2026042116141975.webp )\n\n- [** ooitech](/multiple-colombian-customers-adopt-ooitech-solar-panel-production-lines.html)\n- [** 67](/multiple-colombian-customers-adopt-ooitech-solar-panel-production-lines.html)\n\n### Multiple Colombian Customers Adopt Ooitech Solar Panel Production Lines\n\nSeveral Colombian manufacturers have deployed Ooitech solar panel production lines, strengthening local PV manufacturing capacity and supporting Latin America's renewable energy transition.\n\n![Ooitech PV Ribbon Cutting Machines Exported Worldwide Since 2016](https://cdn.ooitech.com/runtime/image/w800_h500_2026032714589569.webp )\n\n- [** ooitech](/ooitech-pv-ribbon-cutting-machines-exported-worldwide-since-2016.html)\n- [** 71](/ooitech-pv-ribbon-cutting-machines-exported-worldwide-since-2016.html)\n\n### Ooitech PV Ribbon Cutting Machines Exported Worldwide Since 2016\n\nSince 2016, Ooitech PV ribbon cutting machines have been exported to major solar markets worldwide including India, Indonesia, the United States, and the Middle East, supporting global photovoltaic manufacturing growth.\n\n![Algeria Solar Company Procures 3A Grade IV Tester and Environmental Chamber from Ooitech in 2017](https://cdn.ooitech.com/runtime/image/w800_h500_2026041662570864.webp )\n\n- [** ooitech](/algeria-solar-company-procures-3a-grade-iv-tester-and-environmental-chamber-from-ooitech-in-2017.html)\n- [** 68](/algeria-solar-company-procures-3a-grade-iv-tester-and-environmental-chamber-from-ooitech-in-2017.html)\n\n### Algeria Solar Company Procures 3A Grade IV Tester and Environmental Chamber from Ooitech in 2017\n\nIn 2017, an Algerian photovoltaic company purchased a 3A grade IV tester and environmental test chamber from Ooitech to strengthen solar panel quality assurance and reliability testing capabilities.\n\n![Cosmic Solar Purchases 5MW Semi-Automatic Solar Panel Production Line from Ooitech in 2014](https://cdn.ooitech.com/runtime/image/w800_h500_2026041511844574.webp )\n\n- [** ooitech](/cosmic-solar-purchases-5mw-semi-automatic-solar-panel-production-line-from-ooitech-in-2014.html)\n- [** 913](/cosmic-solar-purchases-5mw-semi-automatic-solar-panel-production-line-from-ooitech-in-2014.html)\n\n### Cosmic Solar Purchases 5MW Semi-Automatic Solar Panel Production Line from Ooitech in 2014\n\nIn 2014, Indian company Cosmic Solar purchased a 5MW semi-automatic solar panel production line from Ooitech, marking an important milestone in Ooitech early international market expansion and India solar manufacturing growth.\n\n![Mitrex Partners with Ooitech for Custom Solar Panel Manufacturing Equipment in 2023](https://cdn.ooitech.com/runtime/image/w800_h500_2026033110926450.webp )\n\n- [** ooitech](/mitrex-partners-with-ooitech-for-custom-solar-panel-manufacturing-equipment-in-2021.html)\n- [** 68](/mitrex-partners-with-ooitech-for-custom-solar-panel-manufacturing-equipment-in-2021.html)\n\n### Mitrex Partners with Ooitech for Custom Solar Panel Manufacturing Equipment in 2023\n\nIn 2021, Canadian BIPV company Mitrex adopted Ooitech laser cutting machines and customized automatic framing equipment to support its building-integrated photovoltaic panel production.\n\n![Malaysian BIPV Client Adopts Ooitech Production Equipment for Solar Module Manufacturing](https://cdn.ooitech.com/runtime/image/w800_h500_2026042143929194.webp )\n\n- [** ooitech](/malaysian-bipv-client-adopts-ooitech-production-equipment-for-solar-module-manufacturing.html)\n- [** 58](/malaysian-bipv-client-adopts-ooitech-production-equipment-for-solar-module-manufacturing.html)\n\n### Malaysian BIPV Client Adopts Ooitech Production Equipment for Solar Module Manufacturing\n\nA Malaysian BIPV client has successfully adopted Ooitech solar panel production equipment to launch its building-integrated photovoltaic module manufacturing operations.\n\n![Ooitech OCY-H600D Semi-Automatic Solar Panel Laminator Delivered to Korean Research Institute](https://cdn.ooitech.com/runtime/image/w800_h500_2026041717573839.webp )\n\n- [** ooitech](/ooitech-ocy-h600d-semi-automatic-solar-panel-laminator-delivered-to-korean-research-institute.html)\n- [** 74](/ooitech-ocy-h600d-semi-automatic-solar-panel-laminator-delivered-to-korean-research-institute.html)\n\n### Ooitech OCY-H600D Semi-Automatic Solar Panel Laminator Delivered to Korean Research Institute\n\nSince 2022, a Korean institute has continuously purchased Ooitech OCY-H600D semi-automatic electric heating solar panel laminators for process testing applications.\n",
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