Removable remote control unit for a slide projector

A slide projector with a control unit which can be detached from the projector and used as a remote control unit, said control unit comprising switching means for slide changing and lens focusing, said switching means electrically connected to the slide projector by means of a supply cable, said control unit comprising a control housing having upper and lower portions, said upper portion for accommodating said switching means for slide changing and lens focusing;

• said lower portion including means for removably fixing said control unit to said slide projector, said projector including an aperture, said lower portion of said control unit comprising a stepped bottom portion insertable into said aperture and removably fixed therein by said fixing means, said control unit further including electrical contacts on said control unit lower portion, said electrical contacts in electrical communication with said cable;
• said slide projector further including an accessory, said accessory comprising:
• means for removably fixing said control unit to said accessory;
• further control and/or indicator means;
• and
• electrical contacts in electrical communication with said accessory control and/or indicator means and in communication with said control unit electrical contacts when said control unit is removably fixed to said accessory.