Pressure Switch Alarm

This instructable will show you how to make an awsome pressure switch alarm. I spent about 10$! warning it is loud

What you need for this project is:
1. soldering iron
2. solder
3. soldering skills
4. 12v siren
5. 9v battery clip
6. 150 ohm resistor resistor ,color(brown,green,brown,gold)
7. 3 pin pressure switch
8. on/off switch
9. 9v battery
10. wire
11. 12v DC relay (I got mine from an old Phillips computer monitor)
12. The moment of truth lie detector (Don't worry its fake).
13. a box to put it in.

First you need to take apart the "Fake" lie detector.
look at picture for detales.

see pictuers for details.

sorry this is mt first instructable