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Core Electronics > Retired

KIT - Relay Board (3.3V)

SKU: 005-K005

$7.16 AUD, inc GST
$6.51 AUD, exc GST

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KIT - Relay Board (3.3V)

SKU: 005-K005

$7.16 AUD, inc GST
$6.51 AUD, exc GST
1 reviews 0 5 4


  • $6.95 Standard (2-4 days, tracked)
  • $9.95 Express (Overnight*, tracked)
  • $3 Economy Post* (3-7 days, no tracking)
  • FREE Pickup (Newcastle only)

Shipping costs may increase for heavy products or large orders.

Exact shipping can be calculated on the view cart page.

*Conditions apply, see shipping tab below.

This product has been retired and kept here for reference.

Many people asked if we did a "normal" style relay, a version that required just a single "data" line to turn on/off.  So we designed this.

You need 3v to power the relay coil (2.8v to 4v will do). The input (IN) requires just a few milliamps at anywhere between 2.5v and 12v. You can even use the same volatge you are powering the coil from.

  • Low cost way to control larger voltages and currents.
  • Relay supplied will vary depending on stock; will either be a 7A or 10A device.
  • Supplied as a kit. Easy to build.
  • Supports any microcontroller or TTL signal (3.3ma drive max) 3.3v to 5v supported. Relay current consumption at 5v is 73ma (on the IMO relay pictured)
  • On-board switching transistor.
  • On-board back EMF protection.
  • Easy 1 wire drive. High for on, low for off.
  • Small size 50mm long x 26mm wide x 19mm high
  • mains rated relay

This product is listed in:

Documentation and Resources:
  • The Maker Revolution
  • The Maker Revolution celebrates the creation of new devices and the modification of existing ones - the transition from a consumer buying goods to eventually having a major part in their creation. The Maker Revolution places strong emphasis on free (...

Product Comments

Customer Reviews

  1. Review by Nickname - Perfect for PI verified purchaser

    Great little board easy to assemble and easy to use, works flawlessly with the Raspberry Pi.

    Loses one star as it is only rated to 7A at 240VAC, which is different to the picture. (Posted on 29/11/2014)

Exact shipping can be calculated on the view cart page (no login required).

We deliver Australia-wide with these options:

  • $3 for Small Items (3-7 days, not tracked, only available on selected small items)
  • $6.95 for Standard Post (2-4 days, tracked)
  • $9.95 for Express Post (Overnight for most of Australia, 2+ days for rural, tracked)
  • Pickup - Free! Only available to customers who live in the Newcastle region (only after we email you to notify your order is ready)

International Orders - the following rates are for New Zealand and will vary for other countries:

  • $11.49 for Pack and Track (3+ days, tracked)
  • $16.50 for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount might increment based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
NSW, 2289

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

Have a product question? We're here to help!