A motion sensor is an electronic sensor that detects movement in its immediate vicinity and reacts to this movement for example by closing a contact. It is used mainly for switching lights on and off and for triggering alarms.
A luminaire with a multi-lamp ballast can be equipped with different lamps of the same length. This means that stock-keeping can be significantly improved, which in turn leads to cost savings in advance of the actual use of the products. The entire logistics are greatly simplified.