Disclosed are a system, device and/or an apparatus of modular hanging lasers to enable real-time control in a distribution center. In one embodiment, a laser assembly, includes a first support member having a curved upper hook, a second support member having the curved upper hook, and a printed circuit board in between the first support member and the second support member: (1) that is physically coupled with the first support member at a first rotation point of the printed circuit board, and which is physically coupled with the second support member at a second rotation point of the printed circuit board. The laser assembly is attached to a first wire of a distribution center above at least one row of the distribution center having at least one of a shelving, an inventory, and storage compartments along at least one row.