Industrial-grade large-sized electrical terminals provide more stable and reliable contact. Anti-EMI frequency converter PLC interference to protect data. Loaded on the signal to reduce surges, resist RMI electromagnetic interference, and protect from being burned. The 485 anti-interference device can be connected in series on the signal line. The passive RS485-422 broadband anti-interference isolator can work in strong interference environments and ensures normal communication of control data. Product application: The product has exquisite design, simple wiring and easy use. It is widely used in fields such as industrial monitoring, civil PTZ monitoring and industrial equipment control. Features: Operating range can be as wide as industrial-grade temperatures of -45 to and85 degrees No photoelectric type temperature drift and additional power supply noise No need for additional power supply and passive optocoupler that replaces power-stealing methods No secondary interference caused by the use of power supply due to RS485 photoelectric isolator Passive RS485 or 422 isolator with excellent 12ns transient response Standard RS485 or 422 line impedance matching, return loss 18DB Low insertion loss, less than 0.8DB Operating temperature range: -45 degrees to and85 degrees Material: plasticandmetal colour: blackandblue Package Contents: 1 x RS485 anti-interference device Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.