It's elevator spotting! Watch the elevators and comment how many you see open their doors at Ground Floor (the one that you are on) Also comment the ones that you see go out of service! Elevators:- Otis GEN2 Series 7 (US version) with Kone sounds except the beep! ThyssenKrupp MRL Slow generic that has been modernised by Schindler. Outside indicator was left original.
Thanks zz9pluralzalpha for original Thanks simprogrammer for beep from his SliderSelect!