When stocks reached warehouse, warehouse officer will look for location to store the stocks (pallet, carton, loose packing).Pallet and carton sizes can be stacked (single or multi-layer) on racks or floors.
For loose is advisable to use put to light (PTL) system or pick to light (PTL) system for easy identification
Each Pick-to-Light display module contains a two digit LED display, a tri-colour indicator light, and three push buttons - one for count up, one for count down and one for pick/put complete. The display unit consists of a high impact, moulded polycarbonate bezel, which snaps onto the wire-way channel. A laminated, tactile push button pad with the three buttons is permanently bonded to a recess in the bezel. A cut out in the bezel matches a clear window in the tactile module for the two-digit LED display. The LED and colour indicator light is attached to the controller printed circuit board, which in turn is attached to the bezel. In the event of a display malfunction, the entire bezel assembly is quickly unsnapped from the channel and replaced.
The advantages of this system when an order need to be picked, the host will send signal to the PTL worker will look for the location that flash light, once done he will press another button(to show job done). The host will continue to display if uncompleted jobs. This ensures a complete list of job done paperless
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