Relay Control by NCD: LOW COST 1-Channel 20A SPDT Relay Controller with RS-232 Interface

R120HPRS RS232 Relay

LOW COST 1-Channel 20A SPDT Relay Controller with RS-232 Interface

Reliable Serial Communications will suit any control needs.

Control this Device Over the Internet

Signal Switch Compatible

LOW COST 1-Channel 20A SPDT Relay Controller with RS-232 Interface

$29.00/ea

Product Resources:

	This Device is E3C Complaint allowing 256 NCD Devices to Share a Single RS-232 Serial Port.
	Download the Product Manual
	Download Visual Basic 6 Example Source Code
	Download Example Software and Source Code

Software Development Tools:

Download the
NCD Component Library

The NCD Component Library is a Plug-In for Visual Studio 2005/2008 that greatly reduces software development time, effectively reducing most control operations to a single line of code. This free download includes many example applications covering a wide range of topics.

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.

Features

9600 Baud Operation
Relay Status LEDs
Quick Connect Terminal Blocks
TTL RS-232 Inputs
+12 Volt Operation, 2-Wire RS-232
Overkill Transistor Drivers
No-Click Power-up
2-Way Communication Capable

9600 Baud Operation
Relay Status LEDs
Quick Connect Terminal Blocks
TTL RS-232 Inputs
+12 Volt Operation, 2-Wire RS-232
Overkill Transistor Drivers
No-Click Power-up
2-Way Communication Capable

Quick Connect Terminal Blocks

Serial Relay

Mechanical Drawing

This Product:

R120HPRS

Ratings	AC	DC
Voltage	240	24
Amperage	20	20

	LOW COST 1-Channel 20A SPDT Relay Controller with RS-232 Interface
Stock#: R120HPRS
1-9	$29.00

Related Products:

R120HP

	LOW COST 1-Channel 20A SPDT RS-232 Relay Controller
Stock#: R120HP
1-9	$19.00

QUANTITY DISCOUNTS UP TO 100 PIECES ARE BUILT INTO OUR SHOPPING CART. CHANGE YOUR ORDER QUANTITY TO SEE QUANTITY PRICING.

National Control Devices, LLC
www.controlanything.com
Since October, 1995

RS-232 Serial Relay Controller

Our RS-232 Relay Boards are fully E3C complaint, allowing up to 256 NCD devices to share a single RS-232 serial port. Mix and match up to 256 devices in any combination. Speak to each device individually or all devices at once.

To control the this Relay Controller, simply connect a data and ground wire between the Relay Controller and computer or microcontroller. Provide +12 Volts DC to the board, and send ASCII character codes to control the relays.

Even a no-frills design deserves a high-quality driver stage, and that's exactly what we put on our Serial Relay Controllers. Fast-reacting flyback diodes help shunt dangerous voltages away from the driver circuit.

Features include no-click startup, LED status lights, and E3C compliance. Relays can be controlled at 9600 baud and the board is compatible with ANY computer or microcontroller capable of delivering RS-232 data.

Setup for the R120HPRS RS232 Relay shown above. Simply connect the Power and the Serial Cables and start sending commands.

Essential Accessories: PWR12 and SER
These Accessories provide everything you need to begin using your RS232 relay controller. Accessories needed for this board are a high quality regulated switcher supply and a serial cable (shown below). These items are available at checkout when purchasing the controller.

PWR12 12 Volt 1.25 Amp Power Supply	$24/ea	SER 6 ft. Serial Cable DB9M-DB9F	$6/ea

LOW COST 1-Channel 20A SPDT Relay Controller with RS-232 Interface

Quantity in Basket: None
Code: R120HPRS
Price: $29.00
Shipping Weight: 0.50 pounds

Do you need a Power Supply?:

	No Power Supply will be Included
	120VAC to 12VDC 1.25A 60Hz USA Computer Grade Regulated Power Supply (+$24)
	100-240VAC to 12VDC 1.5A 50/60Hz International Computer Grade Regulated Power Supply with 4 Adapters (+$36)

Do you need a Serial Cable?:

	No Serial Cable will be Included
	6 Foot Serial Cable DB9M to DB9F (+$6)

Quantity:

LOW COST 1-Channel 20A SPDT Relay Controller with RS-232 Interface

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
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		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
WiFi with Web Interface	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

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
WiFi with Web Interface	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
WiFi with Web Interface	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
WiFi with Web Interface	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
High Power Switching	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

Application Videos

Product Support

Resources

Informational and Technical Resources

Product Type:

Induction Suppression

Articles

Relay Applications

Software

Manuals

Data Sheets

Warranty Information

Contact Information
Video Resources
Internet Relay Control
Contact Information

Product Type:
Induction Suppression
Articles
Relay Applications
Software
Manuals
Data Sheets
Warranty Information
Contact Information

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great web sites:
www.SignalSwitch.com
www.controlanything.com

National Control Devices, LLC

World's Largest Manufacturer of Computer Controlled Switching Devices Since 1995.

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Please Note: Our office will be closed for Memorial Day on May 28th.

Customer Support

About National Control Devices

Tools and Resources

National Control Devices, LLC

PO Box 455 - Osceola - MO - 64776
Phone: 417.646.5644 - Fax: 866.562.0406
Open 9AM-4PM Central Standard Time
http://www.relaycontrollers.com/

R120HPRS RS232 Relay

LOW COST 1-Channel 20A SPDT Relay Controller with RS-232 Interface

Resources

Product Resources:

Software Development Tools:

Video Resources

Introduction to Relay Control

Intro to Wired Communications

Induction Suppression

Introduction to A/D

How to Find the Com Port

About Expansion Ports

Features

This Product:

R120HPRS

Related Products:

R120HP

RS-232 Serial Relay Controller

LOW COST 1-Channel 20A SPDT Relay Controller with RS-232 Interface

ProXR: Expandable Computer Controlled Relays

Computer Controlled ProXR Lite Relays

Low Cost Relays

Reactor: Sensor Controlled Relays

Key Fob Reactor: Remote Controlled Relays

TaraList: Time Controlled Relays

MirC: 1-Way Remote Contact Closure Control

MirX: 2-Way Remote Contact Closure Control

Interface Technologies

Analog to Digital Conversion Boards

Contact Closure Input Monitors

Accessories

Third-Party Retail Software

Miscellaneous Products and Accessories

Informational and Technical Resources

National Control Devices, LLC

Attention

Customer Support

About National Control Devices

Tools and Resources

National Control Devices, LLC