To ensure a certain level of security, KS-1 features a key-operated power supply switch for limited screen access. It is intended for use with the SS-1R single station control, or MS-3R and MS-4R multiple station controls, where the safety feature of key control is also required.


  • Includes 2-position key operator and two keys.
  • Cover plate dimensions: 2-3/4” (70 mm) x 4-1/2” (114 mm) fits a single-gang box.
  • Stainless steel cover plate.
  • Single-pole, single-throw (SPST) (on-off).
  • Switch function: maintained action.
  • UL listed.

Part Numbers

Part numberDescriptionMSRP Price
121017 110 V$142.00

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