They are quite inexpensive to handle simple and have nevertheless a large effect: the movement alarm units. These small technical plants can be used in different way in the everyday life. They contribute on the one hand to save river if one reaches the house entrance in the darkness and up to the own entry door does not reach the artificial road lighting. Here a movement alarm unit proves as extremely efficient, because it turns the light on only if necessary, thus only if one the house inhabitant or a visitor reached in the dark the house entrance. Beyond that carry Movement alarm unit for a increased - felt and actual - security. Because it is one simply better, if one at deepest night in the complete darkness after the key not to herumkramen and so that theoretically it must count that someone could near-creep, without we can notice it. In addition, if one can already wähnen oneself in the security of the own four walls, the movement alarm unit performs further courageously and impressively its service. Because one registers it immediately in this way, if in a dark input area someone suddenly approaches the door. Here the movement alarm unit makes itself helpful equal in double way, because on the one hand it serves us then as a kind warning system, on the other hand might the automatically concerned light a visitor, who strikes a Dietrich or a similar tool instead of the bell used fast into the escape.

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