Industrial-grade large-sized electrical terminals provide stable and reliable contact. Designed to reduce signal surges and resist electromagnetic interference (EMI), helping protect connected equipment. The device can be connected in series on the RS485 signal line. This passive RS485/RS422 isolator operates reliably in environments with strong electromagnetic interference and supports stable control data communication. Application: Suitable for industrial monitoring, security camera systems, and industrial equipment control. Features simple wiring and easy installation. Features: - Operating temperature range: -45°C to +85°C - No external power supply required - No optocoupler-related temperature drift or power supply noise - Eliminates secondary interference commonly associated with powered isolators - Fast transient response: 12 ns - Complies with standard RS485/RS422 line impedance requirements; return loss: 18 dB - Low insertion loss: < 0.8 dB Material: Plastic and metal Color: Black and blue Package Includes: 1 × RS485 anti-interference device Note: Color appearance may vary slightly due to lighting and screen settings. Slight dimensional variation (±1–3 cm) may occur due to manual measurement.