> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Big Dome Push Button - Blue

**Type:** Product page · **SKU:** COM-11274 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/big-dome-push-button-blue.html ([markdown](https://core-electronics.com.au/big-dome-push-button-blue.html.md))

It’s the end of the world, and you need a button to press. This is it. A 100mm diameter (outside diameter) dome illuminated push button comes with an LED, securing nut and a pre-installed long life horizontal microswitch. Button can also be adjusted to a low profile button by removing the middle ring.

## Pricing

- **Price:** $38.80 (inc GST) — $35.27 AUD, exc GST
- **Quantity discounts:** 5+ $34.22 (exc GST) · 25+ $33.51 (exc GST) · 100+ $32.10 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 1 today, and up to 250 more in 5–11 days.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=COM-11274:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/COM-11274:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

It’s the end of the world, and you need a button to press. This is it. A 100mm diameter (outside diameter) dome illuminated push button comes with an LED, securing nut and a pre-installed long life horizontal microswitch. Button can also be adjusted to a low profile button by removing the middle ring.

The internal LED and microswitch have separate connections, so the LED behaviour depends on how you connect it.

**Features:**

- LED indicator light runs at 12VDC
- Bulb holder is easy to install or remove
- 3 Terminals Button Actuator microswitch included (NO and NC contacts)
- Microswitch reliability tested to 10,000,000 cycles
- Microswitch can be replaced
- Polycarbonate lens cap for optical clarity
 
**Dimensions:**

- 100 mm Diameter x 72 mm Height
- Net weight: 100grams
- Mounting hole diameter: 24 mm
 
**Documents:**

- Whack-Dome Demo Video
- [Whack-Dome Demo Sketch](https://core-electronics.com.au/attachments/localcontent/WhackDome_132560ecd8b.zip)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/b/i/big_dome_push_button_-_blue__com-11274__01.jpg)