Door Alarm Material List

1. Insulated Wire
   • Get 4 strands of wire, each 1 foot in length
   • You can find the wires around the house, inside battery-operated appliances that no longer work. Make sure that your parents give you permission to take them apart.
   • You can also buy the wires and other supplies listed from a Radio Shack, a hardware store, or the electrical section of big stores like Walmart.
   • Note: In order to make this alarm, you will need to peel off the rubber/plastic insulation from two of the wires. Try to peel the wires before starting this lesson. If it is too difficult for you, then you can buy non-insulated wire that does not need peeling.
2. 1.5-volt battery.
3. Kite string or button-and-carpet thread, 3-5 feet long.
4. Scissors
5. Electrical tape
6. 1.5-volt mini-buzzer
7. Spring-type wooden clothes pin
8. A scrap piece of board or plywood 4 inches by 12 inches or bigger.
9. Super Glue

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