Kwa dumbwaiter, amene chimagwiritsidwa ntchito yoperekera chakudya, tableware ndi zofunika tsiku ndi tsiku odyera, hotelo, kugula likulu etc. Ndi dongosolo PLC ulamuliro ndi wapadera kapangidwe dongosolo, timapereka inu otetezeka, mkulu-dzuwa ndi mankhwala odalirika.
