You will need:
about 2 inches of a wide cable with no wires in it
2 ringing alarms
1 piece of cardboard [about 1X4inches]
about 1.5 feet of wire [1/2 red, 1/2 black]
1 2.7 volt capacitor [this will boost the small battery]
1 1-volt lithium battery
1 regular size paperclip
2 tiny pieces of scrap metal [you can find in alleys]
wire tape [very handy and keeps you safe from shocks]
plastic clip [handy if wires need to be pinched together to complete the circuit]
Step 1: Let's Get Started!
Start by twisting the wires on the two ringers.
Step 2: Put on the Battery
If no sound: check to see if the battery is dead or if the circuit is incomplete.
If faint buzz: flip the battery over to the - side or the + side.
[THE ORANGE CLIP IS THERE OVER THE BATTERY BECAUSE I HAD TROUBLE ATTACHING THE BATTERY TO THE WIRE. IT HELPED]
Step 3: Attach the Super-Capacitor
Step 4: Make the Switch
Step 5: Compete the Circuit
Step 6: FINAL STEP
Then attach the wide cable right down the middle of it. Next, thread some thread down the cable and tie it to the end of the paperclip so that when you pull the other end it rings.
FINALLY... Attach alarm to a wall next to your door... Attach thread to door... Open Door...............