"When you have teenagers you have lots of traffic up and down the drive. My drive alarm helps me keep tabs on my teenagers and their friends as they come and go. It is especially helpful at night to know that my kids have arrived home safely and on time. Having the lights automatically switched on is also very nice. We like Jim and Shelly very much and recommend them and their ding dong system highly"

"We have found our drive alert sensor to be an absolutely reliable and dependable system that we think is really essential to the world in which we live today. We love the low maintenance, to almost no maintenance requirement of our surveillance system. We feel it is a tremendously powerful deterrent to crime. It works!"

"Business travel is difficult enough without worrying about the safety and security of my family when I am away. Now that we have installed the Invisible Gate driveway sensor, my kids run to the window and look to see who is coming. If they do not recognize who is coming, they run to tell my wife instead of bolting to open the door. I cannot imagine leaving my family alone without it"

"Having the ability to differentiate between vehicles entering our main and service entrances is a wonderful feature of the Invisible Gate. The automatic lighting has proven to be a real deterrent for ‘night visitors’ who inadvertently enter our drive. We really do depend on our “ding dong” driveway security system and would not part with it for anything."

"I am absolutely addicted to my drive alarm. My husband was initially reticent to try it because he felt our security system was sufficient for our needs. After experiencing the entry alert and having the lights automatically come on, he quickly became a convert as well. To hear my husband speak about it now, one would think it was his idea to try it in the first place. It really has become the best part of our overall security system and the one device we would not live without."

“Our home is located on a 125 acre farm in northern Virginia. Living at the end of a drive almost a mile long, my wife and I were experiencing problems with people coming on to our property without our knowledge. Way back in 1987, a Protech sales representative stopped by with some information about the Invisible Gate. We were very interested and agreed to try it. We quickly came to depend on our drive signal and how it turns our lights on automatically. We have recently upgraded to a more sophisticated system that tells us when someone is coming or going. We have had virtually no problems with our drive alarm system over the past 20 years. We highly recommend it”

“Dogs learn quickly whether visitors are coming or going; while cats still don’t seem to care."

(We are in the process of negotiating a deal with Fritzie’s agent and should have a personal interview soon.)