How many hand-held transmitters can be registered on the RolloPort S4? F. Tepaße Updated February 25, 2022 15:37 Follow Up to 6 handheld transmitters can be registered. Related articles How to register a handheld transmitter with the RolloPort S4? When the hand-held transmitter is actuated, the lamp flashes briefly, but the drive does not move. The RolloPort S4 no longer responds to the pushbutton and hand-held transmitter. Only the lighting flashes several times. No motor movement. Is it possible to connect several external buttons to the RolloPort? The garage door drive stops during the closing process and moves in the opposite direction.