If a sleeve on a button is damaged (e.g. torn), the push-button cap must be replaced.

The transmitter does not require disassembly to exchange the caps.

   Fully press down the actuator and hold it.

   Using a blunt instrument, pry out the white catches of the detent ring at the top, bottom, left and right on the sleeve.

●   The push-button cap now only lies loosely on top of the transmitter.

   Take off the push-button cap.

   Attach the new push-button cap. The undercut ensures that the cap fits in only a single position.

   Press in the sleeve around the circumference until the detent ring latches.