34 Pa. Code § 7.74 – Dual control passenger elevators.

(a) Dual control elevators are subject to all the requirements covering automatic control passenger elevators.
(b) Emergency releases, if used, shall be so arranged as to be inoperative when the elevator is being operated as an automatic controlled elevator.
(c) Car gate contacts shall be mounted on the gate in such a position as to require the closing of the car gate while operating the car from either the car switch or the pushbutton circuit.

This section cited in 34 Pa. Code § 7.71 (relating to conflicts); and 34 Pa. Code § 7.293 (relating to automatic and dual control freight elevators).