Quick Searches

USB relay
  LPT relays
  RS485 relays


New Products

Latest News

Dear Customers,
Please check the discount in certain categories, such as "USB Host Relay", "Relay boards", "LPT Relays", "RS485 Relays", "RS232 Relays", "UART Relays " ,"RF433 MHz Relays ", "Programmers"
Thank you!

RS485 Relay Controller - Eight Channel GECOSOFT

The general purpose of RS-485 Eight Channel Relay Controller. Control devices using your PC.
  • Code: SS_RS485REL_BOX_GECO
  • Manufacturer: KMtronic
  • In stock: 0

Out of stock
Price: €34.00

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:
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.

Shopping Cart

Cart is empty.



Local Time


Work time
Monday - Friday
9.00am - 5.00pm





Technical support


Recently Viewed