The Driveway alarm does not work in cold weather at below 5 degrees Celcius you can walk or drive past it and it just won't work. The day fines up and it works - sometimes double alarming.
So useless in Winter at night / early morning.
Not recommended..

Then there is the question of dealing with a firm that admits their product is likley to be faulty, having taken your money up front, whose customer service is sluggish at best insists that the client now further extends their good will to gain a working replacement. By insisting that we first send back their faulty alarm system, that does at least work sometime and in doing so asking the now unsecured client to just wait ....wait.... wait on an unresponsive merchant to finally send back a working unit (we hope) seems like a one way proposition especially from a firm that promotes products and itself as a company that will keep you and your family secure.

Approximate cost: $350