As part of a programme of fire safety works we have recently had emergency lighting installed in the communal areas of our building. The lighting is motion-sensitive, switching on when it detects movement in the hallway and – sometimes – switching off when there has been no movement for 5 minutes or so.
But sometimes the lighting comes on even when there is nobody in the hallway. Many times I’ve opened the door of our flat to find the light just outside already on (it does not detect the door opening). This is happening on our floor and also in the ground floor hallway. Two visits from the contractors to adjust the light settings has not resolved the problem.
On both floors, the lights are fitted to a ceiling with a room directly above them. My current theory is that walking in the room above the light makes it switch on, which suggests they are sensitive to vibrations and not just movement beneath them. This will mean that the lights are on a lot of the time, wasting electricity.
The contractors have hinted there have been many complaints about these lights. Has anyone else had these lights fitted and noticed similar problems?
I have similar light; it does not use infra red like security lights but radar so detects body movement. There should be a setting to adjust how sensitive that is, but even if reduced it can detect someone behind a door, eg your neighbour at their doorway in their flat or someone nearby (walking directly above it on the next floor up).