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Small rectangular passive serial adapter with DB9 and terminal block connectors

Vszerda

Vszerda RS-232 to RS-485 Passive Data Converter

SKU CH-W1GD-3EX7D

Passive two-way adapter converts RS-232 signals to RS-485 for single-chip computer interfaces

  • Converts RS-232 signals to RS-485 format
  • Passive design requires no external power source
  • Supports two-way data communication between devices
  • Compatible with master single-chip computer systems

Passive RS-232 to RS-485 Converter

This passive adapter links an RS-232 port to an RS-485 bus without external power. It suits engineers and hobbyists connecting legacy serial gear or single-chip computers to differential networks.

Upgrade from direct RS-232 wiring

The converter replaces point-to-point RS-232 cables when longer runs or multi-drop topology are needed. The jump is worth it when signal distance or node count exceeds RS-232 limits and a powered isolator is not required.

How it compares

Measured against everything we stock in Serial & Protocol Converters, at today’s prices. Recalculated every night.

Price $14.99
Cheaper than about 60% of the 121 comparable items (median $19.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Does the RS-232 to RS-485 converter need an external power supply to operate?

No, this is a passive two-way converter that draws power from the serial port signals themselves, so no separate power adapter is required.

How do I connect the RS-232 side to my computer if it only has USB ports?

Use a USB-to-RS-232 adapter cable; plug its DB-9 male end into the converter's RS-232 port, then install the adapter's driver so the OS sees a virtual COM port.

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