The device arrived slightly broken. I was able to repair it using epoxy. It initially didn't work well and had limited range. That problem was resolved when I re-opened the device and moved the antenna wire from away from the enclosure screw.
In the beginning I had reservations about it, but after reading the directions a second time and paying attention, (it's a guy thing) I found it to hook right up and works extremely well. Don't know why I didn't get it sooner. Excellent tech help and product.