The keyed stop switch is to replace the traditional push/pull or toggle stop switch that where traditionally installed until the elevator code eliminated that option. The replacement of the manual stop switch will eliminate the possibility of people using the elevator as their personal elevator and/or initiating the stop switch and trapping another passenger(s) in the car while the elevator is traveling between floors.
This upgrade is to increase the elevator’s ability to service the building and eliminate threats to the security of the riders.