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We are now selling the FULLY ASSEMBLED AND TESTED clap switch 

How to use the clap switch kit (NEW TUTORIAL) 


Description: This FULLY ASSEMBLED sound/clap operated switch can be used for switching your 100-240V AC light bulb. Usually, we use a clap switch to operate a lamp and it can easily do that for you. The kit responses to clap up to a distance of 5 meters, but, the further you go, the louder the clap should be. 


  • Operates a 100-220V AC lamp with a clap/loud sound.
  • Supply voltage: 5V-9V. Use an AC to DC power supply for better response. 9V battery can also be used, but the kit consumes a lot of power while triggering the relay.
  • There are two supply input points: a DC barrel and a 2 pin screw terminal. You can use one of the points to power up the kit.
  • Consists of a PTC resettable fuse. Switches the circuit off if there is an unexpected flow of current over 500mA.
  • Dimension: 83.82mm x 49.53mm
  • Relay specification: Activation voltage: 5V DC. Controls appliances operating at 10A 250VAC, 10A 125VAC, 10A 30VDC, 10A 28VDC. Suitable for Europe, North America, Australia, and New Zealand. 

How did we make it?

This DIY clap-switch is a combination of two kits: 

a. Low-cost clap switch: This clap switch has an LED on it and a loud sound activates the switch. Check out project details.

b. Relay module for the clap switch: The relay module can be connected to the clap-switch to operate 100-220V AC lamps. Check out the project details.

We simply combined these two kits and made one complete clap-switch kit.

It's now a fully assembled kit: It comes fully assembled. We test the kit before shipping. We make sure that the relay and all other parts work. We test the kit using a 9V power supply. After everything is confirmed, we ship the kit.

Package contains: 1 x Fully assembled and tested clap switch


Customer Reviews

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  • All the order are shipped within 2 business days. 
  • Products are either shipped from China or Australia. Item locations are mentioned on the product page.
  • Customers will receive tracking code if they have selected the 'shipping method with a tracking code'.
  • Returns are accepted if the customers return the items within 1 month to our address in Australia. If the item has been shipped from China, the customer still has to return the item to Australia. 
  • Return post fees have to be paid by customers. If the product is defective, we will pay the shipping fees.


Shipping fees for Australian addresses(Item Location: Australia):

  • Standard Post- using Australia Post: US $5.95 ~ AU $9.00 
  • Express Post: US $9.95 ~ AU $15.00


Shipping fees for international addresses (Item Location: Australia):

  • Standard Post with tracking code: US $17.50 ~ AU $26.50
  • Express Post with tracking code: US $36.50 ~ AU $55.00


Shipping fees for Australian and international addresses:(Item location: China):

  • Registered post with a tracking code: US $3.95 ~ AU $6.00 
  • Express Post with tracking code: US $25.00 ~ AU $38.00 


How long does it take to reach the USA, UK, Germany, Australia Canada and other EU countries?  

From China: If we ship from China, the delivery time can be from 7 working days to 15 working days. See the proof on the images below. US based orders are delivered more quickly than other countries.

Most of the USA, UK, Canada, Australia, and Germany  based orders are delivered within 7 days. However, because of customs related processes, it can sometimes take up to 15 days.  Check out all the shipment proof images on this page. 


From Australia: If you have chosen standard post, you will receive your parcel in 3-5 days (in Australia) and 5-7 days (outside Australia)

If you have chosen economy post, you will receive your parcel in 3-5 days (in Australia) and 15-25 days (outside Australia)


What is the proof that we really ship and they are delivered ?

 Check out all the shipment proof images on this page. 


Where do we ship from ? 

We ship our products from Australia and China depending upon what you purchase. BuildCircuit's original products are shipped from Australia. 

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