Good investment with just a few weaknesses

Now, after 3 months of use of the system, I can pull the first result.
On the whole, a good choice. Built very quickly (with a little technical skill at the Fummel work of small screws). For pull no stripping.

Transmitter and receiver are located an average of 4 to 6 feet and operate properly. Even after 3 months no battery weakness of sensors.

Less well done, the preset zone selection.
However, the absolute joke is the "external flash" So sorry, but as a firefly's light. Have a relay turned and crafted an ordinary siren it.