How do you call this switch?

Using Arduino General Electronics
1

Hi,

I would like to buy a switch that lets the current flow, when you take out one of its parts (like a grenade).

For example:
A pocket alarm that starts emitting sound (completes the circuit), when you take out a small plastic stick from it.

Does this kind of switch has a name?

Cheers!
Dani

switch.jpg

2

Just get an audio jack connector with a switch. With some simple connections, you can have the switch open when the plug is inserted, and closes when you "pull the pin".

3

I agree..

I do the same thing all the time with the: Size M Panel-mount Coaxial Power Jack w/Switch [ RadioShack.com Official Site - America's Technology Store ]

I use this set-up as a KILL KEY & RE-CHARGE port for my rechargable battery packs.

when the key is IN.. power/circuit is broke...

when I insert the re-charge plug (doubles as kill key).. it breaks the circuit.. and charges the batteries..