Relay Phidget

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Quick Overview

Use a VINT port with this relay to switch power to a circuit running at up to 1750 watts DC or 1750 volt-amperes AC.
Relay Phidget

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If you need to switch power to a device without the hassle of a big expensive relay, this Relay Phidget is here as a quick an easy option. Rated for 1750W of DC power or 1750 VA of AC power, this mechanical relay is suitable for a wide range of applications. Relays by nature are isolated, so you don't have to worry about a voltage spike on the load side of the relay damaging the control side. If mechanical relays are too slow or noisy for your purposes, have a look at the "Other Relays" tab and chose a solid-state relay (SSR) board.

AC or DC Switching

For DC applications, you can switch a circuit of up to 30V and 5A. For AC applications, you can switch up to 12A or 277V AC, as long as the total power doesn't exceed 1750 VA.

Product Specifications

Board Properties
Controlled By Digital Output
Relay Properties
Switch Type SPDT
Load Current Min 100 mA
Turn-off Time Max 5 ms
Turn-on Time Max 8 ms
Contact Resistance Max 50 mΩ
Dielectric Strength 1.5 kV AC
Electromagnet Coil Resistance 70 Ω
Electrical Properties
Load Voltage Max (DC) * 100 V DC
Load Current Max (DC) 5 A
Load Voltage Max (AC) 277 V AC
Load Current Max (AC) 12 A
Switching Power Max (Real) 1.8 kW
Switching Power Max (Apparent) 1.8 kVA
Current Consumption Min 0 A
Current Consumption Max 70 mA
Physical Properties
Recommended Wire Size 12 - 24 AWG
Operating Temperature Min -40 °C
Operating Temperature Max 70 °C

*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).


Getting Started

Welcome to the 2001 user guide! In order to get started, make sure you have the following hardware on hand:

Next, you will need to connect the pieces:

REL2001 Functional.jpeg
  1. Connect the REL2001 to the VINT Hub using the Phidget cable.
  2. Connect the VINT Hub to your computer with a USB cable.
  3. Connect the circuit to the the "C" and "NO" terminals

Now that you have everything together, let's start using the REL2001!

Using the REL2001

Phidget Control Panel

In order to demonstrate the functionality of the REL2001, 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. If you would like to follow along, first 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 REL2001.

First Look

After plugging the REL2001 into your computer and opening the Phidget Control Panel, you will see something like this:

REL2001 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.

Digital Output

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

REL2001 DigitalOutput 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 digital output by pressing the button.
  • Note: the REL2001 is not designed to be used with Duty Cycle.

Technical Details


A relay is an electrically-controlled switch. For more information about how mechanical relays work and how to use them, check the Mechanical Relay Primer.

Use with an Interface Kit

REL2001 InterfaceKit Terminals Picture.jpg

In addition to plugging directly into VINT ports, the REL2001 relay can be used with Interface Kits that have a Digital Output and 5V supply (like the 1018).

REL2001 InterfaceKit Terminals Diagram.jpg

To connect the REL2001 to the Interface Kit, cut one end off a Phidget Cable. Connect the red and black wires to the 5V and G terminals of the Interface Kit, respectively, and the white wire to the OUTPUT terminal you want to control the relay. Plug the end that still has a connector into the REL2001.

To control the relay, open the DigitalOutput object for the channel the white wire is connected to. Setting the output state TRUE or FALSE will set the state of the relay.

What to do Next

  • Software Overview - Find your preferred programming language here to learn how to write your own code with Phidgets!
  • General Phidget Programming - Read this general guide to the various aspects of programming with Phidgets. Learn how to log data into a spreadsheet, use Phidgets over the network, and much more.
  • Phidget22 API - The API is a universal library of all functions and definitions for programming with Phidgets. Just select your language and device and it'll give you a complete list of all properties, methods, events, and enumerations that are at your disposal.

Additional Information

SKU ES002311
Manufacturer Phidgets

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