As per title (from perspective of individual flat owner with individual video/phone entry system inside), do these things tend to follow any standards (or operate in a very common way with respect to the door plate) etc.. or is each system specific to a certain manufacturer (thus any upgrade perhaps only being feasible via a newer models from the same manufacturer).
Secondary to this - is anyone aware of a model that can allow for remote access when not present in the flat? Obviously solutions are available for the front door of the flat itself but access to the block itself is controlled via the intercom system.
Secondary to this - is anyone aware of a model that can allow for remote access when not present in the flat? Obviously solutions are available for the front door of the flat itself but access to the block itself is controlled via the intercom system.