02.
DUMB WAITER LIFT
Dumbwaiters are the small elevators which do not carry passengers usually. Instead these lifts are used to carry foods, books and other small items. These elevators are used to connect kitchens with rooms on the other floor. These lifts do not have much ropes in it which makes this lift less safer than passenger lifts. The heights of these lifts are very short as compared to other lifts and can be around 1 meter i.e., 3 feet. It follows the same thing which ordinary lifts have like phone call system, door control and floor selections.