> For the complete documentation index, see [llms.txt](https://learn.arduinosa.co.za/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://learn.arduinosa.co.za/sensor-kits/37-in-1-sensor-kit/shock-switch.md).

# Shock switch

![](/files/-MS2OGC5wESvH8m3g0YD)

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 switch contacts connect to the two outer pins.