Shock Knock Sensor

£3.00 GBP
The price is for a single piece.
There are 3 pieces in the retail box.
The quantity has to be a multiple of 3.
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Categories: Security Sensors

Introducing the Lonely Binary Knock Percussion Sensor, the ultimate tool for capturing the magic of impact and vibrations! We've combined cutting-edge technology with a touch of whimsy to create a sensor that will make your projects come alive with every knock.

Picture this: a terminal that forms a center post and a spring that surrounds it, ready to spring into action at a moment's notice. When a force is unleashed upon our sensor, the spring terminal springs into action (pun intended) and momentarily shorts both terminals together. It's a symphony of electrical connection that dances in response to your impact.

Now, let's talk practicality. To make the most of our knock sensor, it's best to position it as close as possible to the area you want to monitor. We want to ensure that no vibrations go unnoticed, and having the sensor in close proximity guarantees that every impact is captured in its full glory. Don't let any structural components dampen the vibrations and steal the spotlight from your project!

But wait, there's more! If you find that the sensor's sensitivity is sky-high for your specific application, fear not. We've got a simple solution for you. Just play around with the sensor's placement. Move it further away from the area of interest, and watch as the sensitivity decreases, allowing you to fine-tune the sensor to match your needs. It's like finding the perfect balance between a gentle tap and an earth-shattering bang.

Lonely Binary, the name you can trust in the realm of knock percussion sensors. We're here to add a touch of whimsy, a dash of creativity, and a whole lot of impact to your projects. Whether you're building a LED circuit that lights up with each knock or creating a masterpiece that reacts to your every move, Lonely Binary is the brand that sparks joy and ignites your imagination.

So, don't settle for ordinary when you can embrace the extraordinary with the Lonely Binary Knock Percussion Sensor. Let your knocks be heard, your vibrations be felt, and your impacts be celebrated. Step into the world of Lonely Binary and let the rhythm of innovation guide your every move!



What’s in the Box

There are 3 pieces in the retail box.
The listing price is for

  • 1 x KY-031 Knock Sensor



  • Australia Orders over $55 - Your order will enjoy free shipping via Australia Post Standard Shipping Services. 
  • International Orders over $99 - Your order will be posted via Australia Post Air Mail Services. 

Raspberry Pi board / Micro:bit board / NVIDIA board will be excluded; All PCB orders will not enjoy free shipping. Distributors and wholesale orders are not eligible for free shipping.


At this time, LONELY BINARY is an online-only business, with our products available through This allows us to keep the cost down for the customer. Orders cannot be picked up. 


We ship Australia wide to all addresses, including PO Box, Parcel Locker, etc.All Australian orders will be shipped via Australia Post, Courier Please or Fastway Couriers (Aramex). International Orders will be shipped via Australia Post or DHL. Your order will be shipped within one business day after we receive payment, providing the items are in stock.

  • Standard Shipping
    Sent via standard Australia Post stamped letter mail, typically 5-9 business days. No tracking/support available other than confirmation of dispatch.
  • Express Post
    Sent via Australia Post Express Service, Fastway Courier or Courier Please, 1 – 2 business days for metro orders, potentially longer for orders outside of metro zones, with full tracking.

Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.

Shipping costs for international orders vary depending on location and package size, where possible we have kept this to flat rate charges to reduce confusion. International orders are shipped through Australia Post and DHL courier service depending on the most economical at the time. 


Shipping Method via Delivery Area Delivery Time(business day) Tracking No. Weight Limit
DHL Asia 1-2 YES No Limit
western EU 2-3 YES No Limit
eastern EU 3-5 YES No Limit
North America 2-3 YES No Limit
Australia 2-3 YES No Limit
South America 3-5 YES No Limit
South Africa 3-5 YES No Limit


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