PCI-E to 4-port RS485/422 expansion card for industrial use with transient voltage suppression protector

Quad RS485/422 Industrial Card: Professional PCIe expansion card adds four independent RS485/422 serial ports for industrial automation. Supports long-distance multi-drop communication up to 1200 metersessential for factory networks, SCADA systems, and distributed control applications.

Transient Voltage Suppression Protection: Built-in TVS protection circuits safeguard against voltage spikes, surges, and electrostatic discharge. Enhanced reliability in harsh industrial environmentsprotects equipment from lightning, switching transients, and electrical noise.

RS485/422 Dual-Standard Support: Each port supports both RS485 half-duplex and RS422 full-duplex communication modes. Versatile protocol compatibilityconnects PLCs, industrial sensors, motor drives, meters, and building automation equipment.

Industrial-Grade Construction: Ruggedized design withstands extreme temperatures, vibration, and electromagnetic interference. Isolation protection prevents ground loop issuesreliable 24/7 operation in manufacturing, utilities, and process control environments.

Multi-Device Network Capability: Each RS485 port supports up to 32 devices on single bus. Ideal for distributed sensor networks, modular automation systems, industrial monitoringcost-effective wiring for complex multi-point communication.