The S16KR series key selector switches are ideal for installation in compact-sized equipment and panels. The 16 mm installation hole size, 29.5 mm protruding rear-length, and independent detachable contacts allow flexible installation in limited spaces. The S16KR series is available in round, square, and rectangular head types with 7 key removal position options. 2-position (spring return/maintained) or 3-position (two-way spring return/right spring return/left spring return/maintained) control is possible depending on the model type.