Occupancy vs vacancy sensors explained for commercial retrofits. Compare automatic-on and manual-on, code requirements, savings and room-by-room applications.

Commercial lighting control systems determine when lights operate, how much light they provide and which fixtures respond together. A system may serve one room or coordinate lighting across an entire building. For distributors and ESCOs quoting retrofits, the challenge is matching the controls to the installed equipment, the way each space is used and the scope the customer expects. A sensor count alone does not establish a complete project price. This guide explains the main

A California lighting retrofit can look straightforward: count the fluorescent fixtures, select LED replacements and calculate the savings. The quote gets harder when you reach the controls, wiring and paperwork. Title 24 lighting requirements depend on what you are changing and which compliance path applies. A lamp replacement, an LED retrofit kit and a complete fixture replacement can lead to different scope decisions. Before you price the job, establish five things: the ap

A Local Law 88 lighting audit needs more than a building-wide fixture count. The team reviewing the upgrade also needs to understand how each space is used, what controls are installed and which details still need verification. For distributors, ESCOs and retrofit teams, collecting that information during the first walkthrough makes the estimate easier to build and reduces follow-up visits. This checklist explains what to record, how to organize sensor information and how to