I wanted to let you good guys know about a product that I am very pleased with that helps with home security. It is a wireless driveway alarm that has a relay which I wired into our doorbell. Whenever a car or person comes down our 400 foot long driveway it rings our doorbell in a unique way. We have had very few false alarms, our horse set it off and the neighbors large dog set it off. But placement can minimize those false alarms. It has its own internal buzzer but it was not loud enough so I wired it to the doorbell. I just replaced the batteries after 9 months or so but the ones I removed checked out to still have plenty of juice. Here is a link to Amazons offer of the device:
Amazon.com: Chamberlain The Reporter Wireless Alert System #RWA-300R: Home Improvement