SPDT Single Pole Double Throw Relays have three connections. Common, Normally Open, and Normally Closed. When the relay is off, the common is connected to the normally closed connection of the relay. When the relay coil is energized, the Common swings over to the Normally Open Connection of the Relay.
Large Selection
We offer a large selection of Thirty Two Channel SPDT Relay Boards for applications ranging from small signal switching to high voltage, high current applications. If your looking for a 802.15.4 Wireless SPDT Relay, USB SPDT Relay or Bluetooth SPDT Relay we have the largest connection options around.
Latest Advancements
Look for our ProXR series controllers for the latest advancements in signal switching! The ProXR Series is capable of controlling up to 256 relays. Control one relay at a time or all 256 relays at once with manual and automatic refreshing command set! With our SPDT signal switching, the ProXR Series are built from the ground up with Expansion in mind. Simply Chain the
XR Expansion Modules, one after another, to meet your computer controlled switching requirements. Your system will grow as your needs grow by simply plugging in modules as needed. All boards in the ProXR Series will have the ProXR suffix in the part number. For more detailed information and to order, please click on the links below.
32-Channel SPDT Relay Controller Boards
Displaying 1 - 50 of 51 Products in this Category.
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.
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
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.
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
iPhone Relay Control allows you to use your iPhone or iPad to activate relays with our Web-i devices or over a network using Ethernet or WiFi and a free iPhone App.
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.
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.
Contact Closure to Multiple Relay Devices: MirM Series
Contact Closure to Multiple locations. MirM controllers allow contact closure inputs to control relays in remote locations using multiple relay boards. The sender board is equipped with contact closure inputs, used to control relays on the receiver boards. Both sender and up to 24 remote receiver boards are included when you purchase the MirM Series boards.
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.
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.
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.
AC Pulsar Series: Computer Controlled Light Dimming
The Pulsar Series Controllers offer a computer-controlled light dimming solution with programmable fade rates for each channel. Control up to 255 Levels of brightness for each output using your choice of computer interface. Take control of your lighting from across the room or around the world. 120VAC 60Hz ONLY.
DC Light Dimmer Series: Computer Controlled Low-Voltage Light Dimming
We are about to change the way you think about Low-Voltage LED/Incandescent Lighting Control. Our New DC Lighting Controllers Begin Shipping Late Summer 2012.