The battery-operated IR Quattro wireless presence detector has 1760 switching zones for excellent detection quality. Unique: Square-zone detection with the mechanical capability of infinitely scaling reach systematically controls detection zones, permitting precision planning. It is the most efficient way of bringing lighting automation to offices, classrooms, meeting rooms, training rooms, and conference rooms. You will also find a detailed product description on page 88. The battery-operated detector simply mounts to the ceiling. Signals are wirelessly transmitted to any STEINEL Professional Impulser receiver.