Raspberry Pi Zero Relay HAT



  • BC Robotics
Availability: In Stock


SKU: RAS-109 Manufacturer: BC Robotics Inc. Mfg Part Number: RAS-109 Categories: , Tags: , , ,


With the addition of WiFi and Bluetooth to the Raspberry Pi Zero W, it is now finding itself in many more IoT applications. This 2 Channel Relay HAT makes driving higher current and higher voltage devices as easy as possible! This premium Relay HAT matches the Raspberry Pi Zero form factor and is compatible with all versions of the Pi Zero. Each 10A relay has the Input, Normally Open, and Normally Closed contact broken out to a nice 5mm pitch screw terminal. The board uses high quality North American sourced parts, a locally produced circuit board, and simple logic level inputs.

This HAT is compatible with the Raspberry Pi Zero / Zero 1.3 / Zero W and uses GPIO pins 4 and 17 (Pins 7 & 11) on the GPIO header. Each relay driver is connected to the GPIO through a solder jumper and can be alternatively connected through the 2 pin 0.100″ header if a custom configuration is required.

This board does not ship with a header – we recommend the GPIO Header for Raspberry Pi HAT. Standoffs, like those included in our HAT hardware kit , are ideal for ensuring everything stays in place!

Please Note: While this board is capable of switching higher voltages, please exercise caution. If you are inexperienced or unsure about how to use this product safely we recommend looking at the IoT Power Relay, which has all of its high voltage circuitry fully enclosed.



  • Fits directly on the Pi’s 40 pin GPIO header
  • Uses GPIO 4 and GPIO 17
  • Switch up to 10A per channel!
  • Compatible with all models of the Raspberry Pi Zero




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  Difficulty Level

Soldering Skill: Beginner
Prototyping Skill: Intermediate
Programming Skill: Beginner

  Product Certifications

  Product Attributes

Weight: 40 g

  Warranty Policy

This product has a 30 Day Warranty from the date of delivery. The item must not be modified, abused, incorrectly hooked up, or used for purposes outside the original scope of design.

  Return Policy

This product is returnable Within 14 Days of delivery for a store credit. Item must be unopened, unused, and in re-saleable condition.

More Information:
For more information on our Warranty and Return Policies, please consult our   Terms of Service


  1. PeakyBlinders


    I would like to know if you are providing a programming library (a python library for example) to facilitate the interaction with the HAT.


    • Chris @ BCR


      We don’t intend to release a library for the HAT as it is just two digital pins – pull each pin high and it will trigger the relay.

  2. ahecht (verified owner)

    Soldering a stacking header onto one these boards is almost impossible with the relays in place. You might want to consider selling these with the relays not yet attached, so that they can be soldered on after the headers.

    • Chris @ BCR

      Thanks for the feedback – definitely an option we could offer!

  3. Mike Kemp

    What is the voltage rating of the relays? And is the 10A rating AC or DC?

    (I’m suprised you don’t have this as part of the spec).

  4. rewIndustry

    need to power my boards from the A/C i am controlling, in the same way that virtually all IOT gadgets are usually powered, in the real world.

    nobody seems to be talking about how to do this, or supplying any boards with this ability – am i just not looking in the right place?

    any help would be much appreciated.

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