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USB > RS485 > 24 Channel Relay Board (controller), 12VDC

The general purpose of RS-485 Relay Controller. Control devices using your PC.
  • Code: SS_USB_24_RS485REL_BOX
  • Manufacturer: KMtronic
  • In stock: 999

Price: €131.00

Complete including:
- 1 x  USB<>RS485 adapter
- 3 x  RS485 8 channel relay board

The board is fully compatible with the old version.
This new version has an option to change the BOARD NUMBER  (from 01 to 15) manually through a DIP Switch placed near RS485 connector.


- USB<>RS485 adapter: 100mm / 58mm / 25mm (connectors mounted)
- RS485 Relay board: 108 mm / 150 mm/ 25mm (connectors mounted)

Required power:
12VDC / minimum 600 mA.

Relays have Normally Open (NO) and Normally Closed (NC) Contacts each capable of switching max:
- 12VDC/15A
- 24VDC/15A
- 125VAC/15A
- 250VAC/10A

Communication Parameters:
8 Data, 1 Stop, No Parity
Baud rate : 9600

Relay commands:
OFF command : FF xx 00 (HEX) or 255 xx 0 (DEC)
ON command : FF xx 01 (HEX) or 255 xx 1 (DEC)


RS485 BUS example:

USB to RS485 BUS


USB to RS485 BUS




Additonal information

  Payment accepted:
Credit Card payments, PayPal

Bank Wire Transfer

We ship WORLDWIDE through TNT.

  Import duties, taxes and charges are not included in the item price or shipping charges. These charges
are the buyer's responsibility. Please check with your country's customs office to determine what these additional
costs before you purchase.

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