0112d_EH_Lutron_7.jpg(200)Lutron. Maestro occupancy switches are compatible with all bulb types, including halogens and CFLs. The units’ sensing technology detects natural ambient light so that lights go on only when needed and stay on when a room is occupied. Available in versions for small and large rooms, the sensors can save up to 20% on lighting energy usage, the company says, and are easy to install. www.lutron.com.