Easy to install even for a clumsy handyman, operational in less than 10 minutes to replace a conventional peephole on a reinforced door. Digital color screen, but surely with a rudimentary map, as there is not a big palette of shades but at least it's not black and white, which makes their use more pleasant. Tools required: a round file "rat tail" and a Phillips screwdriver to attach micro mechanical screen at the door. One caveat: the first set of batteries has not taken very long. Pb quality batteries or power hungry device, despite the delay to 10 seconds? To check.
