OTIS FLOOR SELECTOR movie - A beginners guide to how it works.
10:11
DUPLEX elevator call logic - how does THAT work?
11:07
ELEVATOR FROM 1905 - Explaining the logic + floor selector in action.
12:46
Exploring an Otis Elevator button interface PCB
2:40
1920s Otis Elevator Machine Room
14:21
Old OTIS MACHINE ROOM - in detail! (DC-Generator driven) - PART 1
32:17
The lamps you're not allowed to have. Exploring the Dubai lamps
13:21
Cómo funciona la Electricidad Trifásica: ¿por qué 3 fases?
11:33