Can I also mount the lamp incl. reflector at a 90° angle?
Yes, if the CS-CR 0° or 25° mounting clip is being used to attach the reflector to the lamp and also the CS-CW 90° angle mounting clip for attaching the lamp to the mounting surface. However, this should only be attached to a surface edge (max. 30 mm distance) or with min. 15 mm spacers between the reflector and mounting surface, otherwise the reflector will be in complete contact with the surface.