USB Relay

USB Relay

USB Relay

All The Features You Need...

  • Relays Installed on Circuit Board
  • Mounts as a Virtual COM Port on Computer
  • Base Station Software gets you up and running fast
  • Control One Relay or a Bank of Relays
  • ProXR Lite Versions - Not Expandable
  • ProXR Versions - Expandable to 256 Relays
  • Program in almost any language
  • 16 Available Timers

USB Relay
Control By Onboard USB Interface

USB Relay Controllers allow computer controlled switching using the USB port of your computer. An NCD USB Relay Board emulates a COM port, allowing you to speak to the relay board using any programming language that supports serial communications. COM drivers allow you to assign any COM port to the USB Relay Board. An NCD USB Relay Driver supports 8-Channels of 8-Bit / 10-Bit Analog to Digital Conversion (A/D) or UXP Expansion Port, and includes an XR Relay Expansion Port for adding additional relays to the USB Relay Controller Board.

USB Relay Options

USB Relays are available with SPDT 5, 10 and 20 amp, SPST 30 amp and DPDT 1, 3 & 5 amp relays installed.

USB Relay
Control these USB Relays through the USB port of your computer. Mounts as a virtual COM port for easy programming
Extremely Powerful, Very Reliable USB Relay!

Wireless Thru USB

Wireless From USB Port

USB Relay with Wireless Modem

Category Link: Wireless USB
  • Modem Connects to USB Port
  • Mounts as a Virtual COM Port
  • Data is Sent Wirelessly to Controller
  • Easy USB Communications with Wireless Results!

USB Relay

Mounts as a Virtual COM Port on Your PC
Easy Programming From any Language That Supports Serial Communications
USB Relay with the Industry Leading Command Set

Selecting The USB Interface

By selecting the USB interface you will be sending commands through the USB port of your computer to the board.  Boards on this page are equipped with a ZUSB communications module that adds USB communications to the board.  A command consists of a few bytes of data in numerical format usually between 2 and 6 bytes.  Once the command has been received, the controller processes the command and the relay activates.

Selecting a USB Relay Board

Below you will find all USB Relay Controllers that are available.  The difference being the amperage of the relays installed and the type of relay.  Choose the controller that fits the amperage you are switching.  You will find SPDT relays in the 5, 10 and 20 amp versions and an SPST version in the 30 amp version.  For more information on selecting the correct relay for your application see Choosing a Proper Amperage.

Selecting a USB Relay Series

The USB Relay boards are available in the ProXR Lite and ProXR versions. Both versions have the same firmware installed and accept the same ProXR command set, the industry leading command set for controlling relays.  The ProXR Lite version is non-expandable, the ProXR version is expandable to 256 relays.  When you find your controller click on the Full Description link to view full specs, watch setup videos, download software and purchase.

More USB Relay Options

Find the board you need by using the interactive menu to he right.  Hover over the Button and select the number of relays you want installed.  Once there simply select the board with the correct amperage for the item you are switching.


USB Relay

Displaying 1 - 50 of 95 Products in this Category.
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R110PL_USB
USB Relay 1-Channel 10-Amp SPDT ProXR Lite
  • 1 Relays - 10 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR-Lite Series
  • 8 A/D Inputs
  • XR Expansion Port
           $120.00               Full Description
R120PL_USB
USB Relay 1-Channel 20-Amp SPDT ProXR Lite
  • 1 Relays - 20 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR-Lite Series
  • 8 A/D Inputs
  • XR Expansion Port
           $126.00               Full Description
R130PL_USB
USB Relay 1-Channel 30-Amp SPST ProXR Lite
  • 1 Relays - 30 Amp SPST
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR-Lite Series
  • 8 A/D Inputs
  • XR Expansion Port
           $132.00               Full Description
R15PL_USB
USB Relay 1-Channel 5-Amp SPDT ProXR Lite
  • 1 Relays - 5 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR-Lite Series
  • 8 A/D Inputs
  • XR Expansion Port
           $109.00               Full Description
R210PL_USB
USB Relay 2-Channel 10-Amp SPDT ProXR Lite
  • 2 Relays - 10 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR-Lite Series
  • 8 A/D Inputs
  • XR Expansion Port
           $132.00               Full Description
R220PL_USB
USB Relay 2-Channel 20-Amp SPDT ProXR Lite
  • 2 Relays - 20 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR-Lite Series
  • 8 A/D Inputs
  • XR Expansion Port
           $143.00               Full Description
R230PL_USB
USB Relay 2-Channel 30-Amp SPST ProXR Lite
  • 2 Relays - 30 Amp SPST
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR-Lite Series
  • 8 A/D Inputs
  • XR Expansion Port
           $155.00               Full Description
R25PL_USB
USB Relay 2-Channel 5-Amp SPDT ProXR Lite
  • 2 Relays - 5 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR-Lite Series
  • 8 A/D Inputs
  • XR Expansion Port
           $120.00               Full Description
R410PL_USB
USB Relay 4-Channel 10-Amp SPDT ProXR Lite
  • 4 Relays - 10 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR-Lite Series
  • 8 A/D Inputs
  • XR Expansion Port
           $166.00               Full Description
R420PL_USB
USB Relay 4-Channel 20-Amp SPDT ProXR Lite
  • 4 Relays - 20 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR-Lite Series
  • 8 A/D Inputs
  • XR Expansion Port
           $212.00               Full Description
R430PL_USB
USB Relay 4-Channel 30-Amp SPST ProXR Lite
  • 4 Relays - 30 Amp SPST
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR-Lite Series
  • 8 A/D Inputs
  • XR Expansion Port
           $225.00               Full Description
R45PL_USB
USB Relay 4-Channel 5-Amp SPDT ProXR Lite
  • 4 Relays - 5 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR-Lite Series
  • 8 A/D Inputs
  • XR Expansion Port
           $155.00               Full Description
R810PL_XSC
ProXR Lite Relay 8-Channel 10-Amp SPDT with XSC Interface
  • 8 Relays - 10 Amp SPDT
  • XSC Communications
  • Range: 2 Miles to 15 Miles
  • Ideal Use: Power Switching
  • ProXR-Lite Series
  • 8 A/D Inputs
  • XR Expansion Port
           $234.00               Full Description
R820PL_USB
USB Relay 8-Channel 20-Amp SPDT ProXR Lite
  • 8 Relays - 20 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR-Lite Series
  • 8 A/D Inputs
  • XR Expansion Port
           $281.00               Full Description
R830PL_USB
USB Relay 8-Channel 30-Amp SPST ProXR Lite
  • 8 Relays - 30 Amp SPST
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR-Lite Series
  • 8 A/D Inputs
  • XR Expansion Port
           $327.00               Full Description
R85PL_USB
USB Relay 8-Channel 5-Amp SPDT ProXR Lite
  • 8 Relays - 5 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR-Lite Series
  • 8 A/D Inputs
  • XR Expansion Port
           $201.00               Full Description
ZADR3220PROXR_USB
USB Relay 32-Channel 20 Amp SPDT + 8-Channel 8/10-Bit A/D
  • 32 Relays - 20 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $864.00               Full Description
ZADR3230PROXR_USB
USB Relay 32-Channel 30 Amp SPST + 8-Channel 8/10-Bit A/D
  • 32 Relays - 30 Amp SPST
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $995.00               Full Description
ZADR410PROXR_USB
USB Relay 4-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
  • 4 Relays - 10 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $195.00               Full Description
ZADR41DPDTProXR_USB
USB Relay 4-Channel 1 Amp DPDT + 8-Channel 8/10-Bit A/D
  • 4 Relays - 1 Amp DPDT
  • USB Communications
  • Ideal Use: Signal Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $209.00               Full Description
ZADR420ProXR_USB
USB Relay 4-Channel 20 Amp SPDT + 8-Channel 8/10-Bit A/D
  • 4 Relays - 20 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $253.00               Full Description
ZADR430ProXR_USB
USB Relay 4-Channel 30 Amp SPST + 8-Channel 8/10-Bit A/D
  • 4 Relays - 30 Amp SPST
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $266.00               Full Description
ZADR43DPDTProXR_USB
USB Relay 4-Channel 3 Amp DPDT + 8-Channel 8/10-Bit A/D
  • 4 Relays - 3 Amp DPDT
  • USB Communications
  • Ideal Use: Signal Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $220.00               Full Description
ZADR45DPDTProXR_USB
USB Relay 4-Channel 5 Amp DPDT + 8-Channel 8/10-Bit A/D
  • 4 Relays - 5 Amp DPDT
  • USB Communications
  • Ideal Use: Signal Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $232.00               Full Description
ZADR45PROXR_USB
USB Relay 4-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
  • 4 Relays - 5 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $183.00               Full Description
ZADR810PROXR_USB
USB Relay 8-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
  • 8 Relays - 10 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $265.00               Full Description
ZADR81DPDTProXR_USB
USB Relay 8-Channel 1 Amp DPDT + 8-Channel 8/10-Bit A/D
  • 8 Relays - 1 Amp DPDT
  • USB Communications
  • Ideal Use: Signal Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $243.00               Full Description
ZADR820ProXR_USB
USB Relay 8-Channel 20 Amp SPDT + 8-Channel 8/10-Bit A/D
  • 8 Relays - 20 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $322.00               Full Description
ZADR830ProXR_USB
USB Relay 8-Channel 30 Amp SPST + 8-Channel 8/10-Bit A/D
  • 8 Relays - 30 Amp SPST
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $368.00               Full Description
ZADR83DPDTProXR_USB
USB Relay 8-Channel 3 Amp DPDT + 8-Channel 8/10-Bit A/D
  • 8 Relays - 3 Amp DPDT
  • USB Communications
  • Ideal Use: Signal Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $266.00               Full Description
ZADR85DPDTProXR_USB
USB Relay 8-Channel 5 Amp DPDT + 8-Channel 8/10-Bit A/D
  • 8 Relays - 5 Amp DPDT
  • USB Communications
  • Ideal Use: Signal Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $289.00               Full Description
ZADR85PROXR_USB
USB Relay 8-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
  • 8 Relays - 5 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $242.00               Full Description
ZADSR1610PROXR_USB
USB Relay 16-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
  • 16 Relays - 10 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $437.00               Full Description
ZADSR161DPDTPROXR_USB
USB Relay 16-Channel 1 Amp DPDT + 8-Channel 8/10-Bit A/D
  • 16 Relays - 1 Amp DPDT
  • USB Communications
  • Ideal Use: Signal Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $395.00               Full Description
ZADSR163DPDTPROXR_USB
USB Relay 16-Channel 3 Amp DPDT + 8-Channel 8/10-Bit A/D
  • 16 Relays - 3 Amp DPDT
  • USB Communications
  • Ideal Use: Signal Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $441.00               Full Description
ZADSR165DPDTPROXR_USB
USB Relay 16-Channel 5 Amp DPDT + 8-Channel 8/10-Bit A/D
  • 16 Relays - 5 Amp DPDT
  • USB Communications
  • Ideal Use: Signal Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $487.00               Full Description
ZADSR165PROXR_USB
USB Relay 16-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
  • 16 Relays - 5 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $391.00               Full Description
ZADSR2410PROXR_USB
USB Relay 24-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
  • 24 Relays - 10 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $570.00               Full Description
ZADSR241DPDTPROXR_USB
USB Relay 24-Channel 1 Amp DPDT + 8-Channel 8/10-Bit A/D
  • 24 Relays - 1 Amp DPDT
  • USB Communications
  • Ideal Use: Signal Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $546.00               Full Description
ZADSR243DPDTPROXR_USB
USB Relay 24-Channel 3 Amp DPDT + 8-Channel 8/10-Bit A/D
  • 24 Relays - 3 Amp DPDT
  • USB Communications
  • Ideal Use: Signal Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $615.00               Full Description
ZADSR245DPDTPROXR_USB
USB Relay 24-Channel 5 Amp DPDT + 8-Channel 8/10-Bit A/D
  • 24 Relays - 5 Amp DPDT
  • USB Communications
  • Ideal Use: Signal Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $684.00               Full Description
ZADSR245PROXR_USB
USB Relay 24-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
  • 24 Relays - 5 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $501.00               Full Description
ZADSR3210PROXR_USB
USB Relay 32-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
  • 32 Relays - 10 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $702.00               Full Description
ZADSR321DPDTPROXR_USB
USB Relay 32-Channel 1 Amp DPDT + 8-Channel 8/10-Bit A/D
  • 32 Relays - 1 Amp DPDT
  • USB Communications
  • Ideal Use: Signal Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $696.00               Full Description
ZADSR323DPDTPROXR_USB
USB Relay 32-Channel 3 Amp DPDT + 8-Channel 8/10-Bit A/D
  • 32 Relays - 3 Amp DPDT
  • USB Communications
  • Ideal Use: Signal Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $788.00               Full Description
ZADSR325DPDTPROXR_USB
USB Relay 32-Channel 5 Amp DPDT + 8-Channel 8/10-Bit A/D
  • 32 Relays - 5 Amp DPDT
  • USB Communications
  • Ideal Use: Signal Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $880.00               Full Description
ZADSR325PROXR_USB
USB Relay 32-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
  • 32 Relays - 5 Amp SPDT
  • USB Communications
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $610.00               Full Description
ZADSRR32-5SPDTPROXR_USB
USB Reed Relay Controller 32-Channel .5A SPDT + 8-Channel 8/10-Bit A/D
  • 32 Relays - 0.5 Amp Reed
  • USB Communications
  • Ideal Use: Signal Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $880.00               Full Description
ZADSRR32-5SPSTPROXR_USB
USB Reed Relay Controller 32-Channel .5A SPST + 8-Channel 8/10-Bit A/D
  • 32 Relays - 0.5 Amp Reed
  • USB Communications
  • Ideal Use: Signal Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $696.00               Full Description
ZADSSR16XProXR_USB
USB 16-Channel Solid State Relay Controller + 8-Channel 8/10-Bit A/D
  • 16 Relays - Optional Amp Solid-State
  • USB Communications
  • Ideal Use: SS Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
           $408.00               Full Description
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USB Relay - ProXR

Our ProXR USB Relay Boards offer your choice of 1, 3, 5, 10, 20 or 30 amp relays and are available in many channel versions with your choice of eight channel 8/10-BitAnalog to Digital Conversion or UXP Expansion Port on selected models, look for AD or UXP in the part number. All are of course SignalSwitch compatible.  Most USB Relays feature theProXR Command Set (except for the Reactor, Key Fob or Taralist series which do not need to be programmed) and an XR Expansion Port, simply look for PROXR in the part number.  The XR Expansion Port will allow you to expand any ProXR model board to 256 relays using our XR Expansion Modules.  The UXP port will allow you to add Analog to Digital Expansion Modules, Contact Closure Input Modules or Digital Potentiometers to any UXP board.  For more on A/D Conversion and UXP Expansion see below.

USB Relay - ProXR Lite

The ProXR command set has been available in our controllers since 2004 and have been widely used. We now offer the full ProXR Command set in a high functioning low cost relay and for the first time a 1 channel USB controller.  The ProXR Lite series is NOT expandable, although the firmware still thinks 256 relays are available. The relay portion of the controller only responds to the first 1, 2, 4 or 8 relays in bank 1. We did NOT skip the Analog Input portion of the ProXR Lite. All ProXR lite controllers offer a 8-Channel 8/10-Bit Analog to Digital Converter in addition to relay control. The ProXR Lite responds to the same firmware as the ProXR series controllers and is therefore 100% compatible with any applications designed to work with a ProXR series controller.

USB Relay - Reactor Series

The USB Reactor Relay Series controllers represent the worlds first relay controller capable of making its own intelligent decisions based on user input.  The USB Reactor Relay Series controllers are configured using our free Configuration Utility - no programming needed.  Once configured, the controller works without a computer connected, allowing analog inputs to trigger relays according to the configuration. The USB Reactor Relay was developed to address the needs of customers who need a controller capable of making intelligent decisions without a computer.  Live USB Reactor Relays are configured using a standard USB cable.  Once configured, the Reactor will work on its own.  At any time, a remote computer may read analog inputs and take control of the relays.  The remote computer can later return control back to the Reactor logic.

USB Relay - Time Activated

The Taralist series Time Activated Relay Controllers are unlike any other relay timer in the world. The Taralist series have an integrated battery backed Real Time Clock with memory that allows users to control relays based on a time schedule. Connect the controller to your computer with a standard USB cable to setup the time schedule and store your schedule into the Taralist controller - no programming needed. Once stored, the Taralist does not require a computer, and will activate relays according to a schedule that can be as simple or as complex as your application requires.


More USB Relay Options

Find the board you need by using the interactive menu to he right.  Hover over the Button and select the number of relays you want installed.  Once there simply select the board with the correct amperage for the item you are switching.


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