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Industrial PCIe to 8-Port RS485/RS422 Serial Card, 8-CH COM Expansion Adapter with TVS Surge Lightning Protection & Detachable Terminal Blocks for PLC & Industrial Data Communication
- 8 independent isolated RS485/RS422 serial channels with terminal block wiring design; supports half-duplex RS485 2-wire & full-duplex RS422 4-wire, max baud rate up to 921.6kbps, 1200m long-distance transmission & connect up to 31 slave devices per bus.
- Full-channel industrial protection: built-in TVS transient suppression diode + lightning surge + ±15KV ESD protection plus opto-isolation circuit, cuts ground loop interference to guard equipment from factory voltage spike damage.
- Standard PCIe bus, backward compatible with PCIe x1/x4/x8/x16 motherboard slots; onboard large 256-byte independent UART FIFO for stable high-speed continuous data transmission.
- Auto hardware direction control for RS485 without jumper setup; selectable 120 terminal matching resistor, dual full-height & low-profile brackets fit standard PC and 2U compact industrial chassis.
- Wide OS compatibility: Windows 10/11, Win Server, Linux, FreeBSD; widely used for PLC, inverter, sensor, access control, industrial automation & intelligent monitoring system connection.
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This industrial-grade 8-channel PCIe RS485/RS422 serial expansion card expands 8 independent COM ports for industrial PC and server system, equipped with removable terminal blocks for fast on-site wiring and maintenance. Every serial port adopts independent optoelectronic isolation plus TVS surge/lightning/ESD multi-layer protection structure, effectively suppress industrial instantaneous high voltage surge and common-mode interference, realizing stable operation under harsh factory environment.
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- Return for refund within: 30 days
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