A great thing - gives a good sense of security

Installation is relatively simple. The most difficult was the suspension plate to bend so that the screen can be mounted appropriately. But is also described as in the description. I had to bend the until the screen left hook a few times. Delivery was clean, fully and relatively quickly. Class that accompanied two batteries, then you always have a full battery. I can not say anything because the peephole only went into operation over the term.