For input devices and luminaire controllers to interact in many applications, a signal pathway is needed. This may be wiring or, more recently, wireless, with control signals sent through the air. This approach eliminates the need for control wiring, resulting in significant benefits, particularly in existing buildings. Using wireless communication, control devices can communicate as discrete devices or as part of networked systems. Click to read this article by Steve Mesh, LC and Craig DiLouie, LC, CLCP.

While installing controls in new construction or full-scale remodeling is reasonably straightforward, retrofitting controls into an existing building or space can be somewhat problematic, especially when cutting into walls and ceilings is undesirable. To this end, the first step in assessing an appropriate approach is to establish what the goals of a retrofit are. Pure energy savings gains can be realized with simple ON-OFF controls additions, while inclusion of dimming functionality requires greater investment. Embracing more complex targets, such as inclusion of human factors driven lighting strategies are even more involved.