USB Relay USB Relay Control 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 Except  for adding additional relays to the USB Relay Controller Board. No programming is required with the new Reactor Series, Key Fob Series and Time Activated Relays!  No computer is required once the board is configured to your needs either!  Our free configuration utility allows you to simply configure the board and your done! Summary of USB Communications USB Interface mounts as a Virtual COM Port on your PC for easy programming and 100% compatibility across ALL operating systems Plug in, open the Virtual COM Port at 115.2K baud, and start sending commands Expandable to control up to 256 Relays using the XR Expansion Port (ProXR Lite NOT expandable) SPDT, SPST, DPDT and Reed Relay versions available 1, 3, 5, 10, 20 or 30 amp available Control one relay at a time or all relays at once with manual and automatic refreshing command set SignalSwitch Compatible   Lead Product Developer Ryan Sheldon Describes USB Relay Control Technologies, Covering the ProXR Standard and 802.15.4 Wireless Relay.   ZADR45PROXR_USB 4 Channel USB Relay Controller Shop By Channel 1 Channel USB Relays  - USB Control with 1 Relay Installed 2 Channel USB Relays  - USB Control with 2 Relays Installed 4 Channel USB Relays  - USB Control with 4 Relays Installed 8 Channel USB Relays  - USB Control with 8 Relays Installed 16 Channel USB Relays  - USB Control with 16 Relays Installed 24 Channel USB Relays  - USB Control with 24 Relays Installed 32 Channel USB Relays  - USB Control with 32 Relays Installed Shop By Application USB Reactor Relays  - Trigger Relays Automatically Based on Inputs USB Key Fob Relays  - Activate Relays with a Key Fob USB Time Activated Relays  - Time Activated Taralist Relays USB ProXR Lite Relays  - ProXR Lite Controllers with USB Interface USB Analog to Digital Conversion  - A/D Conversion with USB Interface USB Digital Potentiometers  - USB Programmable Potentiometers USB Relays with UXP Expansion  - Add Contact Closures or Potentiometers USB Relay Our USB 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-Bit Analog 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 the ProXR Command Set (except for the Reactor, Key Fob or Taralist series which do not need to be programmed) and an XR Expansion Port (except the ProXR Lite series which cannot be expanded), 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 Reactor Relay 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 Reactor Relays USB Key Fob Relay Put the power of computer controlled switching in your hand!  Key Fob Users are able control relays with the touch of a button you hold in your hand! Touch a button and a command to will be sent to a Reactor Relay Series board that has a key fob chip installed to activate a relay. The Key Fob Relay will be compatible with relays with up to 8 channels. Each Key Fob button can be programmed to control up to 8 relays in any number of ways. The Key Fob Relay will also be able to provide a manual override to the Reactor Series Relay Boards. With USB Key Fob boards are configured using the free configuration utility and uploaded using a standard USB cable. USB Key Fob Relays USB Time Activated Relay 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. Time Activated Relays     USB ProXR Lite Relay 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 ProXR Lite Relays     Articles New to USB Relay? Click the following links for helpful wireless articles to get you started. USB Communications - Introduction Relay Wiring Samples Introduction to Computer Control UADSR241DPDTPROXR 24 Channel USB Relay Controller A/D Conversion USB Analog to Digital Converter UXP Expansion UXP Expansion Port XR Expansion ProXR versions Onboard analog to digital conversion is available on selected models of these controllers! This will allow you to: Read light and temperature levels Easily activate relays when A/D limits are reached Detect audio levels Read switches, potentiometers, and analog joysticks applications are limitless, and surprisingly easy to integrate Available on Select USB Controller boards USB A/D Boards > UXP is a new standardized data port, specifically for the purpose of speaking to various expansion modules. If the controller you are considering is equipped with a UXP port, you can take advantage of extended commands to speak to our growing line of I/O expansion modules. UXP in the part number allows you to: Add Contact Closure Inputs Add Analog to Digital Inputs Add Voltage Detectors Digital Potentiometer Outputs Available on Select USB Boards UXP Boards > Models with the ProXR suffix will feature the ProXR commend set. The ProXR series will allow you to: Send simple commands to activate relays Upgrade without having to re-write your software Activate up to 16 relay timers Control up to 256 total relays using the XR expansion port Full backward/forward compatibility w/the ProXR series command set Available on select USB boards More Information > NCD Component Library Download NCD Component Library By downloading the NCD Component Library you will receive over 40 samples from A/D Conversion to Duration and Pulse Timing and best of all it's FREE!! We want the user to be able to experiment with all the different samples available so as of right now the samples cannot be downloaded individually.  We've "Started" the Programming for You With the NCD Component Library we've "started" the programming for you.  We say started because these are fully functioning samples but we've also included the source code so you can customize them to your exact needs.  Start by downloading the NCDComponentSetup.zip file from the NCD Component page. Download NCD Component Library Over 40 samples included with this download!  To view screen shots of each example visit our NCD Component Library Page. Video Resources (Select a thumbnail to view the video) Introduction to Relay Control Learn how computer controlled relays communicate and control Intro to Wired Communications Learn the basics of wired communications and find the right wired controller for your application Induction Suppression Learn about Induction Suppression and how to counter it using Capacitors Introduction to A/D Learn about Analog to Digital Conversion and its uses How to Find the Com Port Learn how to find the Com Port that your Device is using About Expansion Ports Learn about the Expansion Options available to use with our controllers   This video is a basic introduction to the world of Computer Controlled Switching and Relays in general. Also read our "Introduction to Computer Control" Article.   Watch to find out the advantages of wired communications and the differences between wired communications. Also read our Articles on Communication Protocols.   This video will show you what Induction is and how to use Capacitors to Suppress it. Also read our Article on Induction Suppression.   Learn about the mechanics, applications, and tricks to Analog to Digital Conversion. Also read our Article on Analog to Digital Conversion.   This movie will show you how to find the Com Port assigned to your Relay Controller. The first half of the video will show you how to do so in Windows Vista and the second half is using Windows XP.   This movie will explain the different expansion options that can be used with our controllers. USB Relay I/O A/D Devices UADR220PROXR USB Relay Controller 2-Channel 20 Amp SPDT + 8-Channel 8/10-Bit A/D More >> $126.00 UADR230PROXR USB Relay Controller 2-Channel 30 Amp SPST + 8-Channel 8/10-Bit A/D More >> $136.00 UADR85PROXR USB Relay Controller 8-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D More >> $186.00 UADR810PROXR USB Relay Controller 8-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D More >> $206.00 UAD1216PROXR USB 16-Channel 12-Bit A/D Analog to Digital Converter + XR Expansion Port More >> $156.00 UAD1232PROXR USB 32-Channel 12-Bit A/D Analog to Digital Converter + XR Expansion Port More >> $265.00 UAD1248PROXR USB 48-Channel 12-Bit A/D Analog to Digital Converter + XR Expansion Port More >> $374.00 UPOT8PROXR USB 8-Channel Programmable Potentiometer + XR Expansion Port More >> $117.00 UPOT16PROXR USB 16-Channel Programmable Potentiometer + XR Expansion Port More >> $157.00 UPOT24PROXR USB 24-Channel Programmable Potentiometer + XR Expansion Port More >> $197.00 UADR165PROXR USB Relay Controller 16-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D More >> $306.00 UADR1610PROXR USB Relay Controller 16-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D More >> $346.00 UXPR165PROXR USB Relay Controller 16-Channel 5 Amp SPDT + UXP Expansion Port More >> $306.00 UXPR1610PROXR USB Relay Controller 16-Channel 10 Amp SPDT + UXP Expansion Port More >> $346.00 UADR161DPDTPROXR USB Relay Controller 16-Channel 1 Amp DPDT + 8-Channel 8/10-Bit A/D More >> $309.00 UADR163DPDTPROXR USB Relay Controller 16-Channel 3 Amp DPDT + 8-Channel 8/10-Bit A/D More >> $349.00 UADR165DPDTPROXR USB Relay Controller 16-Channel 5 Amp DPDT + 8-Channel 8/10-Bit A/D More >> $389.00 UMXB24P-AWI USB 802.15.4 Modem 100mw Long Range Integrated Antenna + USB Cable/Enclosure More >> $104.00 UMXB24P-AUI USB 802.15.4 Modem 100mw Long Range External Antenna + USB Cable/Enclosure More >> $138.00 UMXB24-AUI USB 802.15.4 Modem 1mw 300' Range External Antenna + USB Cable/Enclosure More >> $119.00 UMXB24-AWI USB 802.15.4 Modem 1mw 300' Range Internal Antenna + USB Cable/Enclosure More >> $85.00 UADRR16-5SPDTPROXR USB Reed Relay Controller 16-Channel .5A SPDT + 8-Channel 8/10-Bit A/D More >> $389.00 UADRR16-5SPSTPROXR USB Reed Relay Controller 16-Channel .5A SPST + 8-Channel 8/10-Bit A/D More >> $309.00 UXPRR16-5SPSTPROXR USB Reed Relay Controller 16-Channel .5A SPST + UXP Expansion Port More >> $309.00 UXPRR16-5SPDTPROXR USB Reed Relay Controller 16-Channel .5A SPDT + UXP Expansion Port More >> $389.00 UADSR165PROXR USB Relay Controller 16-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D More >> $316.00 UADSR1610PROXR USB Relay Controller 16-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D More >> $356.00 UXPSR165PROXR USB Relay Controller 16-Channel 5 Amp SPDT + UXP Universal Expansion Port More >> $316.00 UXPSR1610PROXR USB Relay Controller 16-Channel 10 Amp SPDT + UXP Universal Expansion Port More >> $356.00 UXPSR245PROXR USB Relay Controller 24-Channel 5 Amp SPDT + UXP Universal Expansion Port More >> $411.00 UXPSR2410PROXR USB Relay Controller 24-Channel 10 Amp SPDT + UXP Universal Expansion Port More >> $471.00 UXPSR325PROXR USB Relay Controller 32-Channel 5 Amp SPDT + UXP Universal Expansion Port More >> $506.00 UXPSR3210PROXR USB Relay Controller 32-Channel 10 Amp SPDT + UXP Universal Expansion Port More >> $586.00 UADSR241DPDTPROXR USB Relay Controller 24-Channel 1 Amp DPDT + 8-Channel 8/10-Bit A/D More >> $450.00 UADSR243DPDTPROXR USB Relay Controller 24-Channel 3 Amp DPDT + 8-Channel 8/10-Bit A/D More >> $510.00 UADSR245DPDTPROXR USB Relay Controller 24-Channel 5 Amp DPDT + 8-Channel 8/10-Bit A/D More >> $570.00 UADSR321DPDTPROXR USB Relay Controller 32-Channel 1 Amp DPDT + 8-Channel 8/10-Bit A/D More >> $581.00 UADSR323DPDTPROXR USB Relay Controller 32-Channel 3 Amp DPDT + 8-Channel 8/10-Bit A/D More >> $661.00 UADSR325DPDTPROXR USB Relay Controller 32-Channel 5 Amp DPDT + 8-Channel 8/10-Bit A/D More >> $741.00 UXPSR241DPDTPROXR USB Relay Controller 24-Channel 1 Amp DPDT + UXP Universal Expansion Port More >> $450.00 UXPSR243DPDTPROXR USB Relay Controller 24-Channel 3 Amp DPDT + UXP Universal Expansion Port More >> $510.00 UXPSR245DPDTPROXR USB Relay Controller 24-Channel 5 Amp DPDT + UXP Universal Expansion Port More >> $570.00 UXPSR321DPDTPROXR USB Relay Controller 32-Channel 1 Amp DPDT + UXP Universal Expansion Port More >> $581.00 UXPSR323DPDTPROXR USB Relay Controller 32-Channel 3 Amp DPDT + UXP Universal Expansion Port More >> $661.00 UXPSR325DPDTPROXR USB Relay Controller 32-Channel 5 Amp DPDT + UXP Universal Expansion Port More >> $741.00 UADR1620PROXR USB Relay Controller 16-Channel 20 Amp SPDT + 8-Channel 8/10-Bit A/D More >> $437.00 UADR1630PROXR USB Relay Controller 16-Channel 30 Amp SPST + 8-Channel 8/10-Bit A/D More >> $501.00 UADR3220PROXR USB Relay Controller 32-Channel 20 Amp SPDT + 8-Channel 8/10-Bit A/D More >> $732.00 UADR3230PROXR USB Relay Controller 32-Channel 30 Amp SPST + 8-Channel 8/10-Bit A/D More >> $846.00 UXPR1620PROXR USB Relay Controller 16-Channel 20 Amp SPDT + UXP Universal Expansion Port More >> $437.00 UXPR1630PROXR USB Relay Controller 16-Channel 30 Amp SPST + UXP Universal Expansion Port More >> $501.00 UXPR3220PROXR USB Relay Controller 32-Channel 20 Amp SPDT + UXP Universal Expansion Port More >> $732.00 UXPR3230PROXR USB Relay Controller 32-Channel 30 Amp SPST + UXP Universal Expansion Port More >> $846.00 UADSRR32-5SPDTPROXR USB Reed Relay Controller 32-Channel .5A SPDT + 8-Channel 8/10-Bit A/D More >> $741.00 UXPSRR32-5SPDTPROXR USB Reed Relay Controller 32-Channel .5A SPDT + UXP Universal Expansion Port More >> $741.00 UADSRR32-5SPSTPROXR USB Reed Relay Controller 32-Channel .5A SPST + 8-Channel 8/10-Bit A/D More >> $581.00 UXPSRR32-5SPSTPROXR USB Reed Relay Controller 32-Channel .5A SPST + UXP Universal Expansion Port More >> $581.00 ZADR45PROXR_USB USB Relay Controller 4-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D More >> $159.00 ZADR410PROXR_USB USB Relay Controller 4-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D More >> $169.00 ZADSR245PROXR_USB USB Relay Controller 24-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D More >> $435.00 ZADSR2410PROXR_USB USB Relay Controller 24-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D More >> $495.00 R110PL_USB ProXR Lite Relay 1-Channel 10-Amp SPDT with USB Interface More >> $104.00 R120PL_USB ProXR Lite Relay 1-Channel 20-Amp SPDT with USB Interface More >> $109.00 R130PL_USB ProXR Lite Relay 1-Channel 30-Amp SPST with USB Interface More >> $114.00 R15PL_USB ProXR Lite Relay 1-Channel 5-Amp SPDT with USB Interface More >> $94.00 R210PL_USB ProXR Lite Relay 2-Channel 10-Amp SPDT with USB Interface More >> $114.00 R220PL_USB ProXR Lite Relay 2-Channel 20-Amp SPDT with USB Interface More >> $124.00 R230PL_USB ProXR Lite Relay 2-Channel 30-Amp SPST with USB Interface More >> $134.00 R25PL_USB ProXR Lite Relay 2-Channel 5-Amp SPDT with USB Interface More >> $104.00 R410PL_USB ProXR Lite Relay 4-Channel 10-Amp SPDT with USB Interface More >> $144.00 R420PL_USB ProXR Lite Relay 4-Channel 20-Amp SPDT with USB Interface More >> $184.00 R430PL_USB ProXR Lite Relay 4-Channel 30-Amp SPST with USB Interface More >> $195.00 R45PL_USB ProXR Lite Relay 4-Channel 5-Amp SPDT with USB Interface More >> $134.00 R810PL_XSC ProXR Lite Relay 8-Channel 10-Amp SPDT with XSC Interface More >> $203.00 R820PL_USB ProXR Lite Relay 8-Channel 20-Amp SPDT with USB Interface More >> $244.00 R830PL_USB ProXR Lite Relay 8-Channel 30-Amp SPST with USB Interface More >> $284.00 R85PL_USB ProXR Lite Relay 8-Channel 5-Amp SPDT with USB Interface More >> $174.00 LRR110_USB Reactor Relay 1-Channel 10-Amp SPDT + 8-Channel 8-Bit A/D with USB Interface More >> $124.00 LRR120_USB Reactor Relay 1-Channel 20-Amp SPDT + 8-Channel 8-Bit A/D with USB Interface More >> $129.00 LRR130_USB Reactor Relay 1-Channel 30-Amp SPST + 8-Channel 8-Bit A/D with USB Interface More >> $134.00 LRR15_USB Reactor Relay 1-Channel 5-Amp SPDT + 8-Channel 8-Bit A/D with USB Interface More >> $114.00 LRR210_USB Reactor Relay 2-Channel 10-Amp SPDT + 8-Channel 8-Bit A/D with USB Interface More >> $139.00 LRR220_USB Reactor Relay 2-Channel 20-Amp SPDT + 8-Channel 8-Bit A/D with USB Interface More >> $149.00 LRR230_USB Reactor Relay 2-Channel 30-Amp SPST + 8-Channel 8-Bit A/D with USB Interface More >> $159.00 LRR25_USB Reactor Relay 2-Channel 5-Amp SPDT + 8-Channel 8-Bit A/D with USB Interface More >> $129.00 LRR410_USB Reactor Relay 4-Channel 10-Amp SPDT + 8-Channel 8-Bit A/D with USB Interface More >> $218.00 LRR420_USB Reactor Relay 4-Channel 20-Amp SPDT + 8-Channel 8-Bit A/D with USB Interface More >> $258.00 LRR430_USB Reactor Relay 4-Channel 30-Amp SPST + 8-Channel 8-Bit A/D with USB Interface More >> $269.00 LRR45_USB Reactor Relay 4-Channel 5-Amp SPDT + 8-Channel 8-Bit A/D with USB Interface More >> $208.00 LRR810_USB Reactor Relay 8-Channel 10-Amp SPDT + 8-Channel 8-Bit A/D with USB Interface More >> $290.00 LRR820_USB Reactor Relay 8-Channel 20-Amp SPDT + 8-Channel 8-Bit A/D with USB Interface More >> $340.00 LRR830_USB Reactor Relay 8-Channel 30-Amp SPST + 8-Channel 8-Bit A/D with USB Interface More >> $380.00 LRR85_USB Reactor Relay 8-Channel 5-Amp SPDT + 8-Channel 8-Bit A/D with USB Interface More >> $270.00 LRSSR8x_USB Reactor Relay 8-Channel Solid State + 8-Channel 8-Bit A/D with USB Interface More >> $270.00 LRSSR8x_USB_MIX Reactor Relay 8-Channel Solid State Mix + 8-Channel 8-Bit A/D with USB Interface More >> $270.00 TLR110_USB Time Activated Relay 1-Channel 10-Amp SPDT with USB Interface More >> $204.00 TLR120_USB Time Activated Relay 1-Channel 20-Amp SPDT with USB Interface More >> $209.00 TLR130_USB Time Activated Relay 1-Channel 30-Amp SPST with USB Interface More >> $214.00 TLR15_USB Time Activated Relay 1-Channel 5-Amp SPDT with USB Interface More >> $194.00 TLR210_USB Time Activated Relay 2-Channel 10-Amp SPDT with USB Interface More >> $214.00 TLR220_USB Time Activated Relay 2-Channel 20-Amp SPDT with USB Interface More >> $224.00 TLR230_USB Time Activated Relay 2-Channel 30-Amp SPST with USB Interface More >> $234.00 TLR25_USB Time Activated Relay 2-Channel 5-Amp SPDT with USB Interface More >> $204.00 TLR410_USB Time Activated Relay 4-Channel 10-Amp SPDT with USB Interface More >> $244.00 TLR420_USB Time Activated Relay 4-Channel 20-Amp SPDT with USB Interface More >> $284.00 TLR430_USB Time Activated Relay 4-Channel 30-Amp SPST with USB Interface More >> $304.00 TLR45_USB Time Activated Relay 4-Channel 5-Amp SPDT with USB Interface More >> $234.00 TLR810_USB Time Activated Relay 8-Channel 10-Amp SPDT with USB Interface More >> $294.00 TLR820_USB Time Activated Relay 8-Channel 20-Amp SPDT with USB Interface More >> $344.00 TLR830_USB Time Activated Relay 8-Channel 30-Amp SPST with USB Interface More >> $384.00 TLR85_USB Time Activated Relay 8-Channel 5-Amp SPDT with USB Interface More >> $274.00 TLR1610_USB Time Activated Relay 16-Channel 10-Amp SPDT with USB Interface More >> $439.00 TLR165_USB Time Activated Relay 16-Channel 5-Amp SPDT with USB Interface More >> $442.00 TLR2410_USB Time Activated Relay 24-Channel 10-Amp SPDT with USB Interface More >> $554.00 TLR245_USB Time Activated Relay 24-Channel 5-Amp SPDT with USB Interface More >> $494.00 TLR3210_USB Time Activated Relay 32-Channel 10-Amp SPDT with USB Interface More >> $669.00 TLR325_USB Time Activated Relay 32-Channel 5-Amp SPDT with USB Interface More >> $589.00 TLR4810_USB Time Activated Relay 48-Channel 10-Amp SPDT with USB Interface More >> $982.00 TLR485_USB Time Activated Relay 48-Channel 5-Amp SPDT with USB Interface More >> $862.00 TLR5610_USB Time Activated Relay 56-Channel 10-Amp SPDT with USB Interface More >> $1,115.00 TLR565_USB Time Activated Relay 56-Channel 5-Amp SPDT with USB Interface More >> $975.00 TLR6410_USB Time Activated Relay 64-Channel 10-Amp SPDT with USB Interface More >> $1,223.00 TLR645_USB Time Activated Relay 64-Channel 5-Amp SPDT with USB Interface More >> $1,063.00 KLRR110_USB Key Fob Relay 1-Channel 10-Amp SPDT + 1-Channel 8-Bit A/D with USB Interface More >> $162.00 KLRR120_USB Key Fob Relay 1-Channel 20-Amp SPDT + 1-Channel 8-Bit A/D with USB Interface More >> $167.00 KLRR130_USB Key Fob Relay 1-Channel 30-Amp SPST + 1-Channel 8-Bit A/D with USB Interface More >> $172.00 KLRR15_USB Key Fob Relay 1-Channel 5-Amp SPDT + 1-Channel 8-Bit A/D with USB Interface More >> $152.00 KLRR210_USB Key Fob Relay 2-Channel 10-Amp SPDT + 1-Channel 8-Bit A/D with USB Interface More >> $177.00 KLRR220_USB Key Fob Relay 2-Channel 20-Amp SPDT + 1-Channel 8-Bit A/D with USB Interface More >> $187.00 KLRR230_USB Key Fob Relay 2-Channel 30-Amp SPST + 1-Channel 8-Bit A/D with USB Interface More >> $197.00 KLRR25_USB Key Fob Relay 2-Channel 5-Amp SPDT + 1-Channel 8-Bit A/D with USB Interface More >> $167.00 KLRR410_USB Key Fob Relay 4-Channel 10-Amp SPDT + 3-Channel 8-Bit A/D with USB Interface More >> $256.00 KLRR420_USB Key Fob Relay 4-Channel 20-Amp SPDT + 3-Channel 8-Bit A/D with USB Interface More >> $296.00 KLRR430_USB Key Fob Relay 4-Channel 30-Amp SPST + 3-Channel 8-Bit A/D with USB Interface More >> $307.00 KLRR45_USB Key Fob Relay 4-Channel 5-Amp SPDT + 3-Channel 8-Bit A/D with USB Interface More >> $246.00 KLRR810_USB Key Fob Relay 8-Channel 10-Amp SPDT + 3-Channel 8-Bit A/D with USB Interface More >> $326.00 KLRR820_USB Key Fob Relay 8-Channel 20-Amp SPDT + 3-Channel 8-Bit A/D with USB Interface More >> $376.00 KLRR830_USB Key Fob Relay 8-Channel 30-Amp SPST + 3-Channel 8-Bit A/D with USB Interface More >> $416.00 KLRR85_USB Key Fob Relay 8-Channel 5-Amp SPDT + 3-Channel 8-Bit A/D with USB Interface More >> $306.00 ZADSR3210PROXR_USB USB Relay Controller 32-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D More >> $610.00 ZADSR325PROXR_USB USB Relay Controller 32-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D More >> $530.00 ZUXPSR161DPDTPROXR_USB USB Relay Controller Board 16-Channel 1 Amp DPDT + UXP Universal Expansion Port More >> $343.00 ZUXPSR163DPDTPROXR_USB USB Relay Controller Board 16-Channel 3 Amp DPDT + UXP Universal Expansion Port More >> $383.00 ZUXPSR165DPDTPROXR_USB USB Relay Controller Board 16-Channel 5 Amp DPDT + UXP Universal Expansion Port More >> $423.00

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