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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"
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RF433MHz Eight Channel Relay Board BOX, 12V

The general purpose of the Relay Controller controlled via RF433MHz using a PC's USB Serial COM port. Control devices using your PC.
  • Code: SS_RF433_8REL_BOX
  • Manufacturer: KMtronic
  • In stock: 288

Price: €45.00


Relay board have an option to change the ID (from ID 01 to ID 15) manually through a DIP Switch placed near power connector.

The complete includes:
- One RF433MHz 8 Relay board (12V)
- One Rotating Rubber Antenna

Required power:
12VDC / 
minimum 600 mA.

Standby current:
(Relays OFF) - 21 mA
One Relay ON - 57 mA
Two Relays ON - 91mA

All Relays ON - 300 mA


- 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.

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


Commands (ID01):
FIRST chanel commands:
OFF command : FF 01 00 (HEX) or 255 1 0 (DEC)
ON command : FF 01 01 (HEX) or 255 1 1 (DEC)
EIGHT chanel commands:
OFF command : FF 08 00 (HEX) or 255 8 0 (DEC)
ON command : FF 08 01 (HEX) or 255 8 1 (DEC)

Status read (ID01):
FF A1 00 - Status request command
  > FF A1 xx xx xx xx xx xx xx xx  - Reply from relay where xx is status: 01 - Relay is ON, 00 - Relay is OFF
First byte is status first relay, Eight byte is status eight relay

Full list of commands:


Software examples:


Create your own label, use your company name or logo

How to control USB relays - Windows Shortcut example, Windows Command Line example, Macintosh example, Abacom ProfiLAB example, Sample Visual Basic code, Sample C# code, Sample PHP files and more






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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