# Micro Switch w/Roller Lever - Three Terminal

**Type:** Product page · **SKU:** ADA819 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/micro-switch-w-roller-lever-three-terminal.html ([markdown](https://core-electronics.com.au/micro-switch-w-roller-lever-three-terminal.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:** $4.10 (inc GST) — $3.73 AUD, exc GST
- **Quantity discounts:** 10+ $3.62 (exc GST) · 50+ $3.55 (exc GST)

## Availability & dispatch

- Out of stock — the product page offers email notification when it returns.

## 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 flat metal lever actuator and a roller at the end. The roller makes it a little better for angled actuation. This switch comes with three terminals (common/normally-open/normally-closed). We also have kinds with a bump actuator, flat lever and long wire. **This is a basic micro switch for arcade and mini robots, and Adafruit don't have any detailed specifications for it so this switch is recommended for use with 30VDC and 250mA max.**

## Technical Details

![](https://core-electronics.com.au/attachments/localcontent/baolianroller_9796be3666.jpg)

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

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/8/1/819-00.jpg)