Current occupancy detection systems primarily use motion sensors. The primary disadvantages of motion sensors are their occupancy measurements and their installation. Motion sensors' occupancy measurements are based on movement rather than on presence and the sensors require custom installation in addition to the installation of luminaires. However, fluorescent lamps with integral proximity sensors provide detection of motion and presence in ranges of up to 11ft or more. In addition, proximity sensors reduce installation and hardware costs because they can be retrofitted as a drop-in replacement and require only replacing the old lamp ballast with a lamp sensor ballast and adding two wires.