> **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

# Micro Switch w/Wire - Three Terminals

**Type:** Product page · **SKU:** ADA820 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/micro-switch-w-wire-three-terminals.html ([markdown](https://core-electronics.com.au/micro-switch-w-wire-three-terminals.html.md))

Micro-switches are often found in arcade buttons and joysticks but they're also really handy in any kind of mechatronics project or when you need a basic sensor...

## Pricing

- **Price:** $5.95 (inc GST) — $5.41 AUD, exc GST
- **Quantity discounts:** 10+ $5.25 (exc GST) · 50+ $5.14 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 31 and Sep 04.

## How to buy

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- **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

Micro-switches are often found in arcade buttons and joysticks but they're also really handy in any kind of mechatronics project or when you need a basic sensor. They are always 'tactile' (clicky feeling), and 'momentary' (the switch closes when pressed, then snaps open once released). They come in a few different varieties (mostly having to do with the contacts and how big the actuator is). 

 This microswitch has a 3" long wire lever actuator and three terminals. Sometimes called 'coin switches' - they're used in coin detectors. The terminals are along the bottom (the other microswitches have them on the sides). We think this switch would do great as a bump sensor: its fairly low torque so the wire snaps the switch before it gets bent. Of course, you can bend the wire as well. We also have kinds with a bump actuator, roller lever and flat lever. 

 This is a basic micro switch and Adafruit don't have any detailed specifications for it. Adafruit aren't sure it's good for high current or high voltage so they suggest keeping it at or below 12VDC and under 50mA until Adafruit can find a spec sheet.

## Technical Details

 ![](https://core-electronics.com.au/attachments/localcontent/baolianwire_89196a1d4d.jpg) ![](https://core-electronics.com.au/attachments/localcontent/rohs_icon_8216055e11.jpg)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/8/2/820-00.jpg)