This trigger allows users to arm the movement detector functionality at the touch of a button on vacating their dwelling and then to disarm it in the same way as they re-enter. It can also be used as a zoning trigger to enable users to arm movement detectors downstairs whilst disabling sensors upstairs to allow movement during the night. This means that users will not need to ‘beat’ the zoning delay time before the system arms, therefore users can take as much time as required to walk up the stairs without needing to panic.