in stock - price: $1.29

1/8in Panel Mount Mono Switching Jack (#ci0162)

short description:

This jack accepts standard 1/8" audio plugs, and it features a mechanical switch that can be used to tie the signal line to ground when a plug is not present.

more information and instructions:

This fits into a 1/4" hole. It has three solder ringlets: signal, ground and a third that gets connected to the signal line when a plug is not present. The picture below shows this "switch". The spring both holds the plug in place, and also closes a switch between the middle and right connections when the plug is missing.