The 342 Acoustic Sensor combines audible and infrasound detectors in one single component as an active part in lighting control. This audible sound sensor is used for near field presence/ movement detection and the infrasound detector is for recognizing e.g. the opening of a door, within the allocated range. The sensor is ideal for enclosed spaces such as corridors, stairwells and single floor parking garage. The 342 is also suited for areas that may require a large number of PIR sensors or that are difficult to equip using traditional movement sensors. Being an acoustic sensor it can be set up out of the line of sight.