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Unit 1 - 6115 4 St SE
Calgary AB  T2H 2H9


Unit 1 - 6115 4 St SE
Calgary AB  T2H 2H9
+1 403 282-7335

PhidgetInterfaceKit 0/0/4

ID: 1014_3

This board has 4 SPDT mechanical relays rated at 210W for DC or 1750VA for AC.


Quantity Available: 615

Qty Price
5 $52.25
10 $49.50
25 $44.00
50 $38.50
100 $35.75
250 $33.00
500 $30.25
1000 $27.50

Due to parts and components going obsolete and becoming unavailable, the 1014_3 has moved to a new processor that is not supported under Phidget21. If you're using our old libraries you must upgrade to Phidget22 before you can make use of this Phidget. If you are using Phidget21, the 1014_2 is still available.

The PhidgetInterfaceKit 0/0/4 allows you to control high power devices such as incandescent light bulbs, fans, and pumps by electronically switching power on and off.

The 1014 has 4 Relay Outputs for switching AC or DC power; the relays are Single Pole Double Throw (SPDT).


  • Control up to four separate devices or circuits with SPDT relays
  • Rated for 210W of DC power or 1750 VA of AC power
  • For DC applications, switch a circuit of up to 30V at 7A
  • For AC applications, switch up to 12A or 277V AC (total power below 1750 VA)
  • Mounting hardware included

Note: This board is not suitable for switching signals. It takes at least 100mA of current to bridge the oxide layer that forms on the relay contacts, and most signals will not meet this requirement. If you need to switch signals, check out the 1017 - PhidgetInterfaceKit 0/0/8.



You can protect your board from dust and debris by purchasing an enclosure. An enclosure will also prevent unintentional shorts caused by objects touching the pins on the bottom of the board or any terminal screws.

Part Number Price
Acrylic Enclosure for the 1014_3


This Phidget can be controlled by a VINT Hub or directly from your computer's USB port. For more information about VINT, have a look at the VINT Overview page. You can use a Phidget Cable to simply and easily connect this device to a VINT Hub. Here's a list of all of the different hubs currently available:

Product Board Properties
Part Number Price Number of VINT Ports VINT Communication Speed Max Controlled By
VINT Hub Phidget
$40.00 6 1 Mbit/s USB (Mini-USB)
1-Port VINT Hub Phidget
$24.00 1 1 Mbit/s USB (USB-A)
VINT Hub Phidget
$35.00 6 1 Mbit/s USB (Mini-USB)
VINT Hub Phidget
$30.00 6 100 kbit/s USB (Mini-USB)
Wireless VINT Hub
$60.00 6 100 kbit/s Local Network (Ethernet or Wi-Fi)
$120.00 6 100 kbit/s

USB Cables

Use a USB cable if you want to connect this Phidget directly to your computer. We have a number of different lengths available, although the maximum length of a USB cable is 5 meters due to limitations in the timing protocol. For longer distances, we recommend that you use a Single Board Computer to control the Phidget remotely.

Product Physical Properties
Part Number Price Connector A Connector B Cable Length
USB-A to Mini-B Cable 28cm 24AWG
$3.00 USB Type A USB Mini-B 280 mm
USB-A to Mini-B Cable 28cm Right Angle
$3.50 USB Type A USB Mini-B (90 degree) 280 mm
USB-A to Mini-B Cable 60cm 24AWG
$3.50 USB Type A USB Mini-B 600 mm
USB-C to Mini-B Cable 60cm 28AWG
$5.00 USB Type C USB Mini-B 600 mm
USB-A to Mini-B Cable 83cm Right Angle
$4.50 USB Type A USB Mini-B (90 degree) 830 mm
USB-A to Mini-B Cable 120cm 24AWG
$4.00 USB Type A USB Mini-B 1.2 m
USB-A to Mini-B Cable 180cm 24AWG
$4.00 USB Type A USB Mini-B 1.8 m
USB-C to Mini-B Cable 180cm 28AWG
$6.00 USB Type C USB Mini-B 1.8 m
USB-A to Mini-B Cable 450cm 20AWG
$12.00 USB Type A USB Mini-B 4.5 m

Phidget Cables

Use a Phidget cable if you want to connect this device to a VINT Hub. You can solder multiple cables together in order to make even longer Phidget cables, but you should be aware of the effects of having long wires in your system.

Product Physical Properties
Part Number Price Cable Length
Phidget Cable 10cm
$1.50 100 mm
Phidget Cable 30cm
$1.75 300 mm
Phidget Cable 60cm
$2.00 600 mm
Phidget Cable 90cm
$2.00 900 mm
Phidget Cable 120cm
$2.25 1.2 m
Phidget Cable 150cm
$2.50 1.5 m
Phidget Cable 180cm
$2.75 1.8 m
Phidget Cable 350cm
$3.00 3.5 m
Phidget Cable Kit
$10.00 80 mm

Getting Started

Welcome to the 1014 user guide! In order to get started, make sure you have the following hardware on hand:

  • 1014 Phidget InterfaceKit 1014 Phidget InterfaceKit
  • USB cable and computer
  • something to use with the 1014 (e.g. power supply and load)

Next, you will need to connect the pieces: 1014 3 Connecting The Hardware.jpg

  1. Connect the load and power supply in series.
  2. Connect one end to the 0C (Common) terminal, and the other to the NO (Normally open) terminal.
  3. Connect the 1014 to your computer using the USB cable.

Now that you have everything together, let's start using the 1014!

Using the 1014

Phidget Control Panel

In order to demonstrate the functionality of the 1014, the Phidget Control Panel running on a Windows machine will be used.

The Phidget Control Panel is available for use on both macOS and Windows machines.


To open the Phidget Control Panel on Windows, find the Ph.jpg icon in the taskbar. If it is not there, open up the start menu and search for Phidget Control Panel

Windows PhidgetTaskbar.PNG


To open the Phidget Control Panel on macOS, open Finder and navigate to the Phidget Control Panel in the Applications list. Double click on the Ph.jpg icon to bring up the Phidget Control Panel.

For more information, take a look at the getting started guide for your operating system:

Linux users can follow the getting started with Linux guide and continue reading here for more information about the 1014.

First Look

After plugging the 1014 into your computer and opening the Phidget Control Panel, you will see something like this:

1014 Panel.jpg

The Phidget Control Panel will list all connected Phidgets and associated objects, as well as the following information:

  • Serial number: allows you to differentiate between similar Phidgets.
  • Channel: allows you to differentiate between similar objects on a Phidget.
  • Version number: corresponds to the firmware version your Phidget is running. If your Phidget is listed in red, your firmware is out of date. Update the firmware by double-clicking the entry.

The Phidget Control Panel can also be used to test your device. Double-clicking on an object will open an example.

Relay Output

Double-click on a Digital Output object labelled Power Relay in order to run the example:

1014 RelayOutput Example.jpg

General information about the selected object will be displayed at the top of the window. You can also experiment with the following functionality:

  • Toggle the state of the relay by pressing the button.

Finding The Addressing Information

Before you can access the device in your own code, and from our examples, you'll need to take note of the addressing parameters for your Phidget. These will indicate how the Phidget is physically connected to your application. For simplicity, these parameters can be found by clicking the button at the top of the Control Panel example for that Phidget.

The locate Phidget button is found in the device information box

In the Addressing Information window, the section above the line displays information you will need to connect to your Phidget from any application. In particular, note the Channel Class field as this will be the API you will need to use with your Phidget, and the type of example you should use to get started with it. The section below the line provides information about the network the Phidget is connected on if it is attached remotely. Keep track of these parameters moving forward, as you will need them once you start running our examples or your own code.

All the information you need to address your Phidget

Using Your Own Program

You are now ready to start writing your own code for the device. The best way to do that is to start from our Code Samples.

Select your programming language of choice from the drop-down list to get an example for your device. You can use the options provided to further customize the example to best suit your needs.

Code Sample Choose Language.png

Once you have your example, you will need to follow the instructions on the page for your programming language to get it running. To find these instructions, select your programming language from the Programming Languages page.

Technical Details


A relay is an electrically-controlled switch. Although many types of electrical switches exist, a relay’s mechanical nature gives it the advantage of reliability and current-switching capacity. The main disadvantage to using mechanical relays is their limited life-span, as opposed to solid state relays who do not suffer from this drawback. For more information, check the Mechanical Relay Guide and the Solid State Relay Guide.

Using a Digital Output Relay

1014 2 Relay Diagram.jpg

Relays have a connection scheme determined by the arrangement of contacts within the relay. Because relays are a type of switch, they are defined in the same way other electromechanical switches are defined.

In switch schemes, the number of poles represents the number of common terminals a switch has, and the number of throws represents the number of switchable terminals that exist for each pole. The relays used in the InterfaceKit 0/0/4 are SPDT relays: single pole, double throw. The internal construction of this type of relay is depicted in the diagram above. Many other types of relays exist: SPST, DPDT, and DPST, to name a few.

In an SPDT relay, one of the throw terminals is labelled normally closed (NC), and the other is labelled normally open (NO). As the name indicates, the normally closed terminal is the terminal connected to common when the relay coil is not powered. When the relay coil is energized by the relay control circuit, the electromagnetic field of the coil forces the switch element inside the relay to break its contact with the normally closed terminal and make contact with the normally open terminal. The switch element would then connect the normally open terminal and the common terminal.

Using Relays as an H-Bridge for Motor Forward/Reverse

1014 1 Bridge Diagram.jpg

Connect the load (typically a DC Motor) to the COM terminals of the relay. The normally open (NO) terminals are connected to the power supply (VCC), and the normally closed (NC) terminals are connected to the ground (GND) of the power supply. You can toggle the corresponding output to switch the relays.

Looking at the diagram, when LeftCtrl is enabled and RightCtrl is disabled, the current will flow from the NO terminal of relay K1 through the motor and into the NC terminal of relay K2. This will cause the motor to rotate in one direction.

Similarily, if LeftCtrl is disabled and RightCtrl is enabled, the current will flow from the NO terminal of relay K2 through the motor and into the NC terminal of relay K1. This will cause the motor to rotate in the opposite direction.

When both LeftCtrl and RightCtrl are disabled, both ends of the motor will be shorted to ground and no current will flow. When both leftCtrl and RightCtrl are enabled, both ends of the motor will be shorted to VCC and again, no current will flow.

Wetting Current

When a relay is in one switch position for a period of time, oxidation of the open contact(s) can occur. Depending upon the internal coating material of the contacts, oxide films of varying density will be displaced upon the surface of open contacts; this film acts as an insulator to current flow. When the relay is switched, a certain amount of current flowing through the contacts, known as the wetting current, is required to remove the film of oxides and ensure proper conduction. Because of this requirement, these relays are not reliable for signal switching. Check the specification table for your relay board to find out the Minimum Load Current or Wetting Current.

Load Noise

If highly inductive loads are used with the InterfaceKit, it is recommended that a noise limiting component be used to prevent damage to the device. An MOV, TVS diode, or kickback diode (for DC applications) shunted across the load will assist in dissipating voltage transients.

What to do Next

  • Programming Languages - Find your preferred programming language here and learn how to write your own code with Phidgets!
  • Phidget Programming Basics - Once you have set up Phidgets to work with your programming environment, we recommend you read our page on to learn the fundamentals of programming with Phidgets.

Product Specifications

Board Properties
Controlled By VINT / USB (Mini-USB)
API Object Name DigitalOutput
VINT Communication Speed Max 100 kbit/s
Physical Properties
Switch Type SPDT
Switching Speed Max 20 cpm
Recommended Wire Size 12 - 24 AWG
Operating Temperature Min 0 °C
Operating Temperature Max 70 °C
Electrical Properties
Dielectric Strength 1.5 kV AC
Contact Resistance Max 120 mΩ
Load Voltage Max (DC) * 30 V DC
Load Voltage Max (AC) 277 V AC
Load Current Min 100 mA
Load Current Max (DC) 7 A
Load Current Max (AC) 12 A
Turn-on Time Max 18 ms
Turn-off Time Max 18 ms
Current Consumption Min 14 mA
Current Consumption Max 300 mA
USB Speed Low Speed
Customs Information
Canadian HS Export Code 8471.80.00
American HTS Import Code 8471.80.40.00
Country of Origin CN (China)

*Note: Switching this relay at voltages higher than 30V will result in a reduced product lifespan.

Please Note: This relay cannot be switched at its maximum AC voltage and current at the same time. Ensure that total power of the load does not exceed the switching power for the relay. For example, you can switch this relay at 277V AC and 6.3A (1750VA), or at 145V AC and 12A (1750VA), but not at 277V and 12A (3324VA).

Cable Length Calculator

Estimated Relay Lifespan

The lifespan of the relays on this Phidget vary depending on how much current you're switching and whether it's AC or DC. The following graph illustrates the relationship between load current and relay lifespan:


The vertical axis is the lifespan of the relay (number of actuations) and the horizontal axis is load current in amps. As you can see, increasing load current from 5A to 10A can reduce relay life by more than half.


Product History

Date Board Revision Device Version Packaging Revision Comment
August 2002 0700Product Release
January 20040704Added State Echoing
January 20060705
July 2007 0706
May 2008 1707Terminal Blocks now accept 12-24 AWG wire, PCB increased to accommodate larger connectors.
March 2010 2707Switched to Mini-USB connector
October 2017 2707BRemoved cable from packaging
January 2023 3810Added VINT connector
May 2023 3811USB bug fixes

Software Objects

Channel NameAPIChannel Interface
PhidgetInterfaceKit 0/0/4
Power Relay DigitalOutput 0 - 3 USB
PhidgetInterfaceKit 0/0/4
Power Relay DigitalOutput 0 - 3 VINT


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Code Samples

Example Options


				Make your selections to display sample code.

Code Samples


DigitalOutput Visual Studio GUI C# Windows Download
DigitalOutput JavaScript Browser Download
DigitalOutput Multi-Channel Example JavaScript Browser Download
DigitalOutput Objective-C macOS Download
DigitalOutput Swift macOS Download
DigitalOutput Swift iOS Download
DigitalOutput Visual Basic .NET Windows Download
DigitalOutput Max/MSP Multiple Download

Have a look at our relay boards:

Product Electrical Properties
Part Number Price Load Current Max (AC) Load Voltage Max (AC) Load Current Max (DC) Load Voltage Max (DC)
16x Isolated Solid State Relay Phidget
$50.00 (per channel) 8 A (per channel) 30 V DC
4x Isolated Solid State Relay Phidget
$25.00 (per channel) 8 A (per channel) 30 V DC
4x Relay Phidget
$30.00 12 A 277 V AC 7 A * 30 V DC
PhidgetInterfaceKit 0/0/4
$55.00 12 A 277 V AC 7 A * 30 V DC
PhidgetInterfaceKit 0/0/8
$85.00 2 A 250 V AC 2 A 120 V DC
Relay Phidget
$10.00 12 A 277 V AC 7 A * 30 V DC
Signal Relay Phidget
$12.00 2 A 240 V AC 2 A 120 V DC
Solid State Relay Phidget
$15.00 10 A 30 V AC * 10 A 30 V DC
Dual Relay Board
$17.00 12 A 277 V AC 7 A * 30 V DC
Dual SSR Relay Board
$30.00 (per channel) 9 A 28 V AC (per channel) 9 A 40 V DC
PhidgetInterfaceKit 0/16/16
SSR Relay Board 0.5A
$10.00 500 mA 28 V AC 500 mA 40 V DC
SSR Relay Board 2.5A
$15.00 2.5 A 28 V AC 2.5 A 40 V DC
PhidgetInterfaceKit 0/0/4
$55.00 12 A 277 V AC 7 A * 30 V DC
PhidgetInterfaceKit 0/0/8
$85.00 2 A 250 V AC 2 A * 120 V DC