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To all customers and suppliers,
With reference to the current international health situation we confirm the normal activity of our company. There will be no delay in shipments and the workflow will remain as it has been.
We hope that you all are in good health and that the situation will be resolved as soon as possible.

RS485 Relay Controller - Eight Channel

The general purpose of RS-485 Eight Channel Relay Controller. Control devices using your PC.
  • Code: SS_RS485REL_BOX
  • Manufacturer:
  • In stock: 4881

Price: €44.00

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.



Required power:
from 9 to 24V DC

Maximum current drawn by digital circuitry at 9V 500 mA
Maximum current drawn by digital circuitry at 12V 350 mA
Maximum current drawn by digital circuitry at 24V 200 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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