This alarm system will alert you when someone is coming up your driveway from up to 1/2 mile away. If you live on a large property this can be a great way to know when you have visitors, wanted or unwanted. The alarm gives you an alert that someone is coming even if you can't see them yet. You can also have separate sensors to make sure you can capture any motion and have different tones for every sensor. The sensor requires 1 9-volt battery and that will give you 9 months of operation.
Posted: 4 years ago