UDP LAN Four Channels Relay Ethernet IP Controller

  • Product Code: UD4CR
  • Availability: 930
  • 63.60 €
  • Ex Tax: 53.00 €

UDP Relay board is developed for software control.
For control via Web Browser - Windows Explorer, Mozilla, Google Chrome... we recommend WEB version.

A general purpose LAN Relay controller.

• Fully assembled and tested.
Each relay has an LED to indicate when it is operated.
Relay outputs can be used to turn ON/OFF lights, motors and other devices. 


  Complete including:
One LAN Four relay controller

  Required power:
12VDC / 1000 mA.

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

110 mm / 55 mm / 25 mm

  Default Settings:
IP address:
Webserver Port: 80 (for initial configuration with username/password)
Subnet Mask:
Default Gateway:
UDP Port: 12345
Username: admin
Password: admin

  Reset to Default Settings:
Hold Reset button for 10 seconds

  UDP Commands:
FF0000 - Status Read command (ASCII encoding)

FF0100 - Relay 1 OFF command (ASCII encoding)
FF0101 - Relay 1 ON command (ASCII encoding)

FF0200 - Relay 2 OFF command (ASCII encoding)
FF0201 - Relay 2 ON command (ASCII encoding)

FFE000 - All relays OFF command (ASCII encoding)
FFE003 - All relays ON command (ASCII encoding)

UDP Test Software example including source code (C#):

KMTronic UDP Test Software.zip
KMTronic UDP Test Software Source Code.zip