We are backed by our years of experience in this domain, offering Elevator Interface Module to customers. This interface simulates the control and operation of an elevator. Four floors are assumed and for each floors a key and corresponding LED indicator are provided to serve as request buttons and request status indicators. The elevator itself is represented by a column of ten LEDs. The motion of the elevator can be simulated by turning on successive LEDs, one at a time. The delay between turning OFF one LED and turning ON the next LED can simulate the “speed” of the elevator. This interface allows the user to write software for simulating the operation of elevator. The software exercise could include priority schemes and different Service schemes etc.