In addition to the call buttons, elevators usually have floor indicators (often illuminated by LED) and direction lanterns. The former are almost universal in cab interiors with more than two stops and may be found outside the elevators as well on one or more of the floors. Floor indicators can consist of a dial with a rotating needle, but the most common types are those with successively illuminated floor indications or LCDs. Likewise, a change of floors or an arrival at a floor is indicated by a sound, depending on the elevator. COUNT 4
QSN1 Modern elevator position or floor indicaters often use what type of bulbs? ANS1 LED QSN2 What type of lanterns are used outside elevators as well as inside most cabs? ANS2 direction lanterns QSN3 What do floor indicaters often consist of? ANS3 successively illuminated floor indications or LCDs QSN4 What generally indicates the arrival of the elevator at a new floor? ANS4 a sound