ASCOM teleCARE SB Installation Instructions Manual page 7

To remove the face plate of the teleCARE switch modules
a screwdriver with a point of approximately 6mm wide is
to be used.
teleCARE Switch Module
Dismantling Instructions
Gently push and turn the screw driver until
the faceplate releases from the backplate.
Insert the point of the screw-
driver into the groove at the
side of the switch module,
between the face plate and
the backplate (or surface
mounting frame) at about
10mm from one of the top
corners.