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Compact USB to RS485 isolated converter adapter with CH340B chip

Ruth's sister

Ruth's sister CH340B USB to RS485 Isolated Serial Converter Adapter

SKU CH-4G20-JR2B0

Isolated USB to RS485 serial converter using CH340B chip for industrial communication

  • CH340B chip converts USB to RS485 for industrial serial links
  • Electrical isolation protects host from ground loops and voltage spikes
  • Compact adapter plugs directly into a USB port without external power
  • RS485 interface supports long-distance differential signalling in noisy environments

Isolated USB to RS485 Converter

The Ruth's sister CH340B adapter connects a USB port to an isolated RS485 serial bus. It uses the CH340B chipset to translate USB signals for industrial or automation equipment. The isolation barrier protects the host computer from ground loops and voltage spikes on the serial line.

Industrial and automation integrators

This converter suits engineers adding isolated RS485 links to a PC or embedded system. Buyers who need a different serial standard, multiple ports on one adapter, or a non-isolated interface should choose another device.

Highlights

  • CH340B chip converts USB to RS485 for industrial serial links
  • Electrical isolation protects host from ground loops and voltage spikes
  • Compact adapter plugs directly into a USB port without external power
  • RS485 interface supports long-distance differential signalling in noisy environments

Specifications

No published specifications for this item yet.

Questions about this item

Does the CH340B adapter generate noticeable heat or noise during continuous all-day operation?

The CH340B USB to RS485 Isolated Serial Converter Adapter has no moving parts and draws minimal power from the USB port, so it runs silently and stays cool even during extended use.

What cabling or connectors do I already need to attach a device to the RS485 side of this converter?

You will need a two-wire twisted-pair cable with terminals that match your RS485 device's screw terminals or pluggable connector, as the adapter provides bare RS485 signal pins.

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