ALARM.OALARM.O

By: Zachary Skelly By: Zachary Skelly Dennis TorbeckDennis Torbeck

ProblemProblem Front door alarm system that does Front door alarm system that does

not use electricity and will restrain not use electricity and will restrain the intruder.the intruder.

researchresearch

Some like it.Some like it. Bells to alert me.Bells to alert me. Involves no power.Involves no power. Sliding door.Sliding door.

Total price and materialsTotal price and materials Bells cost: $280.65Bells cost: $280.65 Man wholeMan whole Piece of wood Piece of wood Slide device to make the wood slide Slide device to make the wood slide

open.open. Old mattress: freeOld mattress: free

What it’s suppose to do and What it’s suppose to do and limitationslimitations

The bell ring's so you no someone The bell ring's so you no someone has broken in and when they open has broken in and when they open the door the trap door opens and the door the trap door opens and they fall into the 10 feet deep whole they fall into the 10 feet deep whole with a mattress at the bottom for a with a mattress at the bottom for a soft landingsoft landing

limitationslimitations Bells could not be loud enough and Bells could not be loud enough and

something can go wrong with the something can go wrong with the trap door.trap door.

I think there was no other ideas that I I think there was no other ideas that I didn’t consider.didn’t consider.

Final designFinal design We kept the original design because We kept the original design because

we thought it was fine.we thought it was fine.