We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green circuit board with multiple relay modules and USB port

Traditions (Generic)

Traditions (Generic) 4/8 Way Programmable Computer Control Module DC 12V USB Control Switch-Free Relay Module

SKU CH-R1B8-GRQXN

A 12V USB-programmable relay module provides four or eight switch-free channels for home automation

  • 4 or 8 programmable channels for flexible home automation
  • DC 12 V operation suits common low-voltage power supplies
  • USB computer control enables software-driven switching
  • Switch-free relay design provides silent solid-state operation

4/8 Way USB Relay Module

This programmable control module connects to a computer via USB and provides four or eight independent relay channels that switch at 12 V DC. It is intended for hobbyists and system integrators who want software-driven control of external devices without manual switches.

USB Power and Channel Limits

The module draws its control power from the USB connection, so the host port must supply sufficient current for the chosen channel count. Each relay is rated for 12 V DC switching only; higher voltages or AC loads are not supported by this design.

Highlights

  • 4 or 8 programmable channels for flexible home automation
  • DC 12 V operation suits common low-voltage power supplies
  • USB computer control enables software-driven switching
  • Switch-free relay design provides silent solid-state operation

Specifications

No published specifications for this item yet.

Questions about this item

Should I choose the 4-way or 8-way version of this control module?

The module is programmable for either 4 or 8 ways, so you select the channel count that matches the number of devices you need to switch.

What does the 12 V DC rating mean when the module is connected to a computer via USB?

The 12 V DC supply powers the relay coils, while the USB link provides the control signals from the computer to activate each channel.

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.