Features: Achieve high measurements with this isolator tester module, featuring 4 fiberglass materials for stable electrical and in IC testing applications. compatibility design supports multiple optocoupler models without equipment swaps, reducing costs through streamlined circuit testing equipment integration. Essential for electronics engineers, technicians, and repair specialists requiring isolator validation during daily maintenance, prototyping, or troubleshooting tasks. Optimized for rapid deployment across laboratory workstations, production line stations, and field operations needing portable IC testing tools for optocoupler diagnostics. Engineered with 4 fiberglass board for heat resistance and mechanical durability, its compact footprint ensures easy storage and mobility in harsh industrial environments. Specifications: Materials: -4 fiberglass board, with excellent insulation and heat resistance, ensuring the product is stable and during use. Size: 3.8x1.8cm, small and portable, suitable for various testing environments. Practicality: Designed for online coupling testing, suitable for electronic component inspection, laboratories and rapid testing on production lines. Package Includes: Optocoupler testing module × 1 note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order.