National Control Devices: Factory Refurbished Items

Refurbished devices are a great low-cost way to incorporate computer control into your next project. Refurbished devices are 100% tested and FULLY FUNCTIONAL prior to shipping. They carry a 30-Day Exchange/Repair-Only warranty (our option). NCD devices may end up on the Refurbished list for any of the following reasons, but they are guaranteed to be fully functional.

Possible Defects:

Returned by a Previous Customer and Retested
Scratches that do not affection functionality
Mismatched LED Colors due to a Repair
Jumper Wires to repair Broken Traces
Connectors that are Discolored or Slightly Corroded
Mounting Holes that are Slightly Damaged
Cosmetic Damages of Various Kinds
Tabs Removed from Surface Mount Controllers
Some Components May be Directly Soldered instead of Socketed
Pluggable Connectors May be Installed
Parts lifted during soldering, still making good connection
Boards may be in new condition due to overstock
Boards may have been used internally for testing and development

All defects are guaranteed NOT to interfere with device functionality, but cosmetically, these devices are not in new condition and have been permanently marked as refurbished devices.

Refurbished devices are offered EXCLUSIVELY to our email subscribers and are not available for general purchase to regular customers (this page is NOT linked anywhere on our web site). You have to stay on the email list to purchase Refurbished Devices, the links to this page will change frequently so don't plan on bookmarking this page.

Factory Refurbished Items

Displaying 1 - 6 of 6 Products in this Category.

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RF-R410PRO

Refurb: RS-232 4-Channel SPDT Relay Controller Board with 10 Amp Relays

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$54.50/ea

RF-R420Pro

Refurb: Quad 20-Amp SPDT High-Power Relay Controller Board

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$74.50/ea

RF-R45PRO

Refurb: RS-232 4-Channel SPDT Relay Controller Board with 5 Amp Relays

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$49.50/ea

RF-XR165

Refurb: Expansion Relay Controller Board with 16 5-Amp SPDT Relays

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$104.50/ea

RF-UADR163DPDTPROXR

Refurbished USB Relay Controller 16-Channel 3 Amp DPDT + 8-Channel 8/10-Bit A/D

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$174.50/ea

RF-R165DPDTPROXR

Refurbished 16-Channel 5A DPDT RS-232 Relay Controller with XR Expansion Port

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$171.00/ea

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Computer Control

ProXR Series

ProXR: Expandable Computer Controlled Relays

The ProXR Series Controller allow computers to read contact closure inputs, analog to digital converters and control up to 256 Relays using a single computer interface. ProXR series controllers focus on expansion for industrial control applications.

Computer Interface:
Network and Internet Options
Ethernet Web-i Web Page Relay	2	4	8	16	24	32	Solid State Relays
Ethernet TCP/IP and Virtual COM	2	4	8	16	24	32	Solid State Relays
WiFi TCP/IP	2	4	8	16	24	32	Solid State Relays
Wireless Options
802.15.4 (Most Popular)	2	4	8	16	24	32	Solid State Relays
Bluetooth	2	4	8	16	24	32	Solid State Relays
XSC Long Range	2	4	8	16	24	32	Solid State Relays
ZigBee Mesh	2	4	8	16	24	32	Solid State Relays
Wired Options
RS-232 Serial	2	4	8	16	24	32	Solid State Relays
USB	2	4	8	16	24	32	Solid State Relays
Fiber Optic	2	4	8	16	24	32	Solid State Relays

Expansion Boards
XR Relay Expansions			4	8	16	24	32	Solid State Relays

UXP Expansions

Potentiometers

Contact Closure Inputs

A/D Conversion

ProXR Lite Relays

Computer Controlled ProXR Lite Relays

The ProXR Lite product line allows computers to read up to 8 analog inputs and control up to 8 relays.
Non-Expandable, the ProXR Lite Product Line focuses on interchangeable Computer Interface Modules and Low Cost

Computer Interface:	Number of Relays on Controller:
Network and Internet Options
Ethernet	1	2	4	8	Solid State Relays
Ethernet with Web Interface	1	2	4	8	Solid State Relays
WiFi	1	2	4	8	Solid State Relays
Wireless Options
802.15.4 (Most Popular)	1	2	4	8	Solid State Relays
Bluetooth	1	2	4	8	Solid State Relays
XSC Long Range	1	2	4	8	Solid State Relays
ZigBee Mesh	1	2	4	8	Solid State Relays
Wired Options
RS-232 Serial	1	2	4	8	Solid State Relays
USB	1	2	4	8	Solid State Relays

Low Cost Relays

Low Cost Relays

Focusing on Cost Reduction and High Volume Manufacturing, the Low Cost Series are No-Frills Relay Controllers that offer Basic Computer Control at Low Communications Speed.

Computer Interface: Number of Relays on Controller:

Ultra Low Cost

Wired Low Cost Relays 1 2

Wireless Low Cost Relays 1 2

Professional Grade Low Cost

Wired Relays 1 2 4 8

Wireless Relays 1 2

Computer Interface:	Number of Relays on Controller:
Ultra Low Cost
Wired Low Cost Relays	1	2
Wireless Low Cost Relays	1	2
Professional Grade Low Cost
Wired Relays	1	2	4	8
Wireless Relays	1	2

Android Relays

Android Relay Control

Android Relays use wireless and internet technologies to communicate with your android smart phone or tablet through free apps available on Google Play. More Coming Soon

Communication Technology	Number of Android Relays:
Web Relay - Android Relay Control Over Internet	1	2	4	8	Solid State Relays
WiFi - Android Relay Control Over WiFi LAN/Internet	1	2	4	8	Solid State Relays
Bluetooth - Android Relay Control Over Bluetooth	1	2	4	8	Solid State Relays

iPhone Relays

iPhone Relays

iPhone Relay Control

iPhone Relay Control allows you to use your iPhone or iPad to activate relays with our Web-i devices.

Communication Technology Number of iPhone Relays:

Web-i - iPhone Relay Control via Web-i 1 2 4 8 Solid State Relays

Communication Technology	Number of iPhone Relays:
Web-i - iPhone Relay Control via Web-i	1	2	4	8	Solid State Relays

Stand-Alone

Reactor Relays

Reactor: Sensor Controlled Relays

Activate Relays when Sensors Reach Limits. Trigger Timers, Counters, and Events.
Use a Computer to Setup the Reactor, then Let the Reactor Work by itself without a computer.
Manually Take Control of Relays from Anywhere in the World using a Computer as needed.

Computer Interface:	Number of Relays on Controller:
Network and Internet Options
Ethernet	1	2	4	8	Solid State Relays
Ethernet with Web Interface	1	2	4	8	Solid State Relays
WiFi	1	2	4	8	Solid State Relays
Wireless Options
802.15.4 (Most Popular)	1	2	4	8	Solid State Relays
Bluetooth	1	2	4	8	Solid State Relays
XSC Long Range	1	2	4	8	Solid State Relays
ZigBee Mesh	1	2	4	8	Solid State Relays
Wired Options
RS-232 Serial	1	2	4	8	Solid State Relays
USB	1	2	4	8	Solid State Relays

Key Fob Relays

Key Fob Reactor: Remote Controlled Relays

Activate Relays with a Remote Control Key Fob. Trigger Timers, Counters, and Events.
Use a Computer to Setup the Key Fob Reactor, then Let the Key Fob Reactor Work by itself without a computer.
Manually Take Control of Relays from Anywhere in the World using a Computer as needed.

Computer Interface:	Number of Relays on Controller:
Network and Internet Options
Ethernet	1	2	4	8	Solid State Relays
Ethernet with Web Interface	1	2	4	8	Solid State Relays
WiFi	1	2	4	8	Solid State Relays
Wireless Options
802.15.4 (Most Popular)	1	2	4	8	Solid State Relays
Bluetooth	1	2	4	8	Solid State Relays
XSC Long Range	1	2	4	8	Solid State Relays
ZigBee Mesh	1	2	4	8	Solid State Relays
Wired Options
RS-232 Serial	1	2	4	8	Solid State Relays
USB	1	2	4	8	Solid State Relays

Taralist Relays

TaraList: Time Controlled Relays

Time Schedule Activated Relays with Computer Interface. Use a Computer to Setup the Time Schedule.
Taralist Series Controllers do not require a computer after initial configuration.
Manually Take Control of Relays from Anywhere in the World using a Computer as needed.

Computer Interface:	Number of Relays on Controller:
Network and Internet Options
Ethernet	1	2	4	8	16	24	32+	Solid State Relays
Ethernet with Web Interface	1	2	4	8	16	24	32+	Solid State Relays
WiFi	1	2	4	8	16	24	32+	Solid State Relays
Wireless Options
802.15.4 (Most Popular)	1	2	4	8	16	24	32+	Solid State Relays
Bluetooth	1	2	4	8	16	24	32+	Solid State Relays
XSC Long Range	1	2	4	8	16	24	32+	Solid State Relays
ZigBee Mesh	1	2	4	8	16	24	32+	Solid State Relays
Wired Options
RS-232 Serial	1	2	4	8	16	24	32+	Solid State Relays
USB	1	2	4	8	16	24	32+	Solid State Relays

MirC Relays

MirC: 1-Way Remote Contact Closure Control

The MirC Product Line Consist of TWO Controllers, Offering Contact Closure Inputs in One Location that Control Relays in a Remote Location. The Transmitter Shows the Status of the Receiver. Smart Features optionally Turn Off Remote Relay if Communications is Lost. Sold in Pairs ONLY.

Computer Interface:	Number of Relays on Controller:
Internet Relay Control with Global Access
Network/Interned Based Contact Closure Controlled Relays	1	2	4	8	Solid State Relays
Wireless Option
Wireless Contact Closure Controlled Relays	1	2	4	8	Solid State Relays
Secure/Encrypted Wireless Contact Closure Controlled Relays	1	2	4	8	Solid State Relays
Wired Option
Direct Wired Contact Closure Controlled Relays	1	2	4	8	Solid State Relays

MirX Relays

MirX: 2-Way Remote Contact Closure Control

The MirX Product Line Consist of TWO Controllers, Offering Contact Closures and Relays on Each Controller. The Contact Closure Inputs at Location A control Relays at Location B. The Contact Closure Inputs at Location B control Relays at Location A. Each Controller Remotely Controls the Other. Smart Features optionally Turn Off Relays if Communications is Lost between the Two Controllers. Sold in Pairs ONLY.

Computer Interface:	Number of Relays on Controller:
Internet Relay Control with Global Access
Network/Interned Based Contact Closure Controlled Relays	1	2	4	8	Solid State Relays
Wireless Option
Wireless Contact Closure Controlled Relays	1	2	4	8	Solid State Relays
Secure/Encrypted Wireless Contact Closure Controlled Relays	1	2	4	8	Solid State Relays
Wired Option
Direct Wired Contact Closure Controlled Relays	1	2	4	8	Solid State Relays

Browse by Interface

Interface Technologies

Computer Interface:	Number of Relays on Controller:
Network and Internet Options
Ethernet	1	2	4	8	16		32	Solid State Relays
Ethernet with Web Interface	1	2	4	8	16		32	Solid State Relays
WiFi	1	2	4	8	16		32	Solid State Relays
WiFi with Web Interface	1	2	4	8	16		32	Solid State Relays
Wireless Options
802.15.4 (Most Popular)	1	2	4	8	16	24	32	Solid State Relays
Bluetooth	1	2	4	8	16	24	32	Solid State Relays
XSC Long Range	1	2	4	8	16	24	32	Solid State Relays
ZigBee Mesh	1	2	4	8	16	24	32	Solid State Relays
Wired Options
RS-232 Serial	1	2	4	8	16	24	32	Solid State Relays
USB	1	2	4	8	16	24	32	Solid State Relays
Fiber Optic		2	4	8	16	24	32	Solid State Relays

Additional Products

A/D Converters

Analog to Digital Conversion Boards

Computer Interface:	Number of Channels on Board:
Wired
Serial	16	32	48
USB	16	32	48
Wireless
802.15.4 (Most Popular)	16	32	48
Bluetooth	16	32	48
XSC Long Range	16	32	48
ZigBee Mesh	16	32	48
Expansion Boards
UXP Expansions	16

Contact Closure Inputs

Contact Closure Input Monitors

Computer Interface:	Number of Channels on Board:
Wired
Serial	16
USB	16	32	48
Wireless
802.15.4 (Most Popular)	16	32	48
Bluetooth	16	32	48
XSC Long Range	16	32	48
ZigBee Mesh	16	32	48
Expansion Boards
UXP Expansions	16	32	48

Product Accessories

Accessories

Power and Interface	Power Supplies	Communication Modules	Additional
Sensors
High Power Switching	Din Rail Hardware	Din Rail Power	UT 4 Terminals
Din Rail Heat Sinks	Din Rail AC Contactors	Din Rail Dc Contactors
Enclosures

Retail Software

Third-Party Retail Software

Product Type:

N Button

Relay Timer

Quick Timer

PTZ Software

Product Type:
N Button
Relay Timer
Quick Timer
PTZ Software

Additional Products

Miscellaneous Products and Accessories

Product Type:
Wireless Modems
Digital Potentiometers
Enclosures
Keypad Encoders
Microcontrollers
Mirror Modules
Wireless Mirror Modules
Motor Controllers
Wireless Controllers
Recovery Kits
Firmware Upgrades