Milton’s Bells Driveway Alarm - Wireless Chime Kit with 25' Signal Hose, Transmitter, and Door Chime with Built-in Volume Control

I bought this so I could tell when someone came down my long gravel driveway. I placed it up a hill, through the woods, so no way of line of sight and it works perfectly 1/2mile from the line to the house bell. Love this bell!!!!!!

We love this driveway alarm system, we are older and don't hear people coming in our driveway, this one works great! So easy to install!!

The metal siding on the building we lease has prevented us from using other wireless drive-thru monitors successfully. We were worried we might have to drill through the wall or dig into the ground to get a drive-thru sensor to work for us. We only do pickup at our window, so those were big expenses we did not want to risk with no payoff. Not only does this work with only a single screw into the outside wall, but it has been going strong on a single 9-volt battery for a few months now. This has worked great for us. No more customers waiting at the window when we're working in the back of the house!

I live on a long driveway which I cannot see a vehicle until the last 100 feet. Put this on the bottom and set up the transmitter about 400 feet away and it works even through trees and elevation. It was a little pricey but worth it.

After trying 2 different wireless motion sensors this one WORKS. After a month of use we haven't had a single false alarm, which was a constant problem with the others.