Industrial-grade large-sized electrical terminals provide stable and reliable contact. Anti-EMI frequency converter PLC interference protection for data integrity. Reduces signal surges, resists RMI electromagnetic interference, and prevents damage from burning. The 485 anti-interference device connects in series on the signal line. Passive RS485-422 broadband anti-interference isolator operates effectively in strong interference environments, ensuring reliable control data communication. Product application: Features a refined design, simple wiring, and easy operation. Widely used in industrial monitoring, civil PTZ monitoring, and industrial equipment control. Features: Operating temperature range of -45C to +85C suitable for industrial environments No photoelectric type temperature drift or additional power supply noise Does not require external power supply; uses passive optocoupler technology without power-stealing methods Eliminates secondary interference caused by power supply in RS485 photoelectric isolators Passive RS485/422 isolator with 12ns transient response performance Standard RS485/422 line impedance matching with 18dB return loss Low insertion loss less than 0.8dB Operating temperature range: -45C to +85C Material: Plastic and metal Color: Black and blue Package Contents: 1 x RS485 anti-interference device Note: The package includes only the items listed above. Other products are not included. Note: Lighting reflections and display differences may cause slight variations between the product color in images and actual color. Measurement error allowed is +/- 1-3cm.