Not sure of the mod but this used to be a Lexan probably. The floor passing chime is kinda spazzing out lol.
My theory was correct. It was a Lexan and modded by Excelsior.
Tech Specs:
Brand: Excelsior
Originally: Otis Lexan
Maintenance: ??
Model/Fixture: Monitor TR 1500
Type: Hydraulic
Floors Served: CL, B, G
DT Rate: 1/10