National Control Devices: Light or Button Controlled Relay

Light or Button Activated Relay

Activate a Relay when it gets dark out or when you push a button

Light or Button Activated Relay Application

In this application we will set up a very simple application that will Require at least a 2 Relay Reactor controller or Key Fob controller. We will use one Light Sensor (CDS Photocell), One Button or Key Fob Button, One Light Bulb, and an AC Power Source. We have provided the Configuration File for your Reactor or Key Fob controller on this page so no configuration is required unless you would like to reverse the operation of the light or add more lights/relays.

This Device could be referred to as a Light Activated Relay or a Dark Activated Relay. To Start the Neutral leg of your AC power source is connected directly to the Neutral Connection of the Light Bulb. Once it is dark out Relay 1 will come on as controlled by the Light Sensor (The AC Power Leg is attached to the Common of Relay one and the Normally Open leg of Relay 1 is connected directly to the Common of Relay 2). When Relay 1 comes on AC power is switched to its Normally Open Pin which applies power to the Common of Relay 2. A wire is attached from the Normally Open of Relay 2to the light bulbs Power Leg Connection. So in essence when both relays are on, and only when both relays are on, the light will have power and will be energized. This is all documented in the provided Schematic on this page.

Product Resources:

Configuration Utility	Download the NCD Configuration Utility
Download Manual	Download the Reactor Manual to learn about the Reactor Logic and Configuration
Download Configuration File	D ownload the Configuration File for this Application
Sensors and Accessories	Reactor Controllers work with Many Sensors and Switches, We are Growing our List of Sensors to Help Speed Development Time

Light or Button Controlled Relay

Displaying 1 - 5 of 5 Products in this Category.

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504PB

Push-On Push-Off Alternate Action Switch Normally Open SPST Black

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$3.08/ea

507PB

Push-On Momentary Switch Normally Open SPST Black

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$3.44/ea

LRR25_USB

2 Relays
5 Amp SPDT
USB Communication
Ideal Use: Power Switching
Reactor Series
Learn More

$129.00/ea

PDV-P8001

Photocell Light Sensor 3K-11K OHM 5.10MM

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$1.50/ea

TS-200

24 AWG-300 Volt 200mm Jumper Wire Reinforced Pin Ends 10-Pack, 2-Yellow, 2-White, 2-Red, 2-Black, 2-

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$6.96/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