There are small variations in pick to light systems, but the standard technology works like this
Operators scan item barcodes that are attached to temporary and reusable holding containers, for example, shipping cartons.
The system’s alphanumeric display (usually, LED lights) then lights up to guide the operator to the indicated pick location. There, the system then indicates how many and which items should be picked.
The operator pick the item(s), places them in the holding container, and then process a button to confirm the picking.
The system continues in this way, illuminating each sector for picking until all items have been picked and placed in there respective holding container.