# PCB mounted push Button

![](https://451694785-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MPda5vaSVRKTQ6AoAmb%2Fuploads%2Fgit-blob-5b755da52d7cc3ca30a8fff4756363631e99a9ef%2Fimage.png?alt=media)

A built-in 10 K ohm resistor is connected between the centre pin and the ‘S’ pin and can be used as a pull up or pull down resistor. The push button connects the two outer pins.

The Button.h library (available from Arduino) is suitable for use with this.