Incorporating sensor and dimmer benefits in one product saves up to 60 percent in lighting energy. The Lutron Masetro turns lights on when a person enters a room, then turns them off when they leave. Proprietary Advanced XCT sensing technology detects fine motion, so lights stay on in occupied rooms; a patented Ambient Light Detect can also sense daylight, so that lights only turn on when there’s not enough light present. Maestro works with incandescents, CFLs and LEDs.