Have you ever inched your way forward into the garage only to smack the front end of your car into the wall, not only damaging your vehicle, but also the house? Have you ever wanted a way to monitor whenever someone pulls up into your driveway while you're home and away? Outdoor monitoring systems can help...home
Garage Parking Sensor
Upgrade from your hanging tennis ball to a high tech solution. A fun stoplight configuration lets you know if you're getting close to the wall and when it's time to stop short of parking your car in the living room. Cheap, fun and practical.
Buried next to your driveway this sensor detects cars when a car passes by and communicates up to 400 feet to its base station to alert you when someone's pulling up to the house. Great for the convenience of letting you know when the mail/guests/husband/wife/kids have arrived but also as a security measure for your home.
If you want to know when anyone or anything is approaching your home, you can install a general motion sensor to alert you when something's out there. This Chamerblain model lets you add up to 8 sensors with a 1/2 mile range from each sensor to the base unit.