I am trying to make something similar to what is called a pull pin or personal alarm, sometimes it is called a baggage alarm. I want it so when you pull or cut a wire it sounds a piezo buzzer, even if you put the wire back in place or reconnect the wire the buzzer doesn't stop. I only want the buzzer to stop when you disconnect the battery. I tried using a 555 timer to do this but haven't had any luck. Does anyone know a circuit or have a schematic for something like this so I can finish this?