Doorbell that Can Turn On a Light Instead of Playing a Tone

When I am using power tools in my workshop, I can't hear the doorbell ring. So I needed some other kind of system that can let me know when someone is at the front door.

I use a wireless doorbell system. This lets you set up multiple receivers without having to run wires all over your house. I also added the option to switch between audible chimes and flashing lights. That way you can still have a traditional doorbell but you are also able to silence it if someone is sleeping.

For step by step instructions, check out the Instructable:
http://www.instructables.com/id/Doorbell-that-Turns-on-a-Light/