The SK Series miniature, panel-mount keylock switches come in either a two- or three-tumbler configuration and are suitable for designs requiring minimum to medium security. Also available are two- or three-position models with keys removable in one, two, or all three positions. Additional custom options are also available upon request. The components feature a 12-mm diameter bushing for standard panel openings and a behind-panel dimension of 27 mm. Other features include a positive detent mechanism, dielectric strength of 1.5 kV between contacts and case, mechanical life of 30,000 operations minimum, and an electrical life of 10,000 operations minimum. Available in SPDT configurations, the contacts are non-shorting (break before make). NKK SWITCHES, Scottsdale, AZ. (480) 991-0942.