Choose from manual-on or bi-level room system control using DLM kits that provide advanced control strategies all in one box. Manual-on/automatic off control provides 20-30% greater energy savings than automatic on/off. It's now required in some energy codes, like ASHRAE 90.1-2010. Bi-level two-load control turns half the lighting on automatically while enabling occupants to turn remaining lights on manually. All lighting turns off automatically when the room becomes vacant. This sequence of operation offers up to 52% greater savings than ordinary automatic on/off and is also mandatory in some codes (California Title 24, ASHRAE 90.1- 2010).