Schroth's FE Cam lock features a slightly different release actuator which allows for use on public roads in North America. An orange push button that says "Press" is required so that an EMT arriving at the scene of an accident can instantly know how to release a restraint. The internals of the cam lock are the same, with the greaseless release mechanism. The only change is the actuator.
Note: These Cams very rarely get attached to a shoulder belt. Cam Locks fixed to shoulders may not be in stock. 13.3 Cam Locks are special order.