Press the buttons. I use HK Elevator Sound (Kone Voice, Otis Series 1 Chime) and Otis Beep. The beep overlaps at higher speeds. I added ALARM Note: the floor sounds use different floor numbers. Also the 1st (2nd on button and indicator) floor's sound has a problem: it says "Third Floor" in English not "First Floor"! Or it seems like that!)
Like my project "Moving Car".