MCK Series Mortise Cylinder Stations

Narrow or single gang mortise cylinder keyswitch stations. Choose between momentary action switch that remains active as long as it’s depressed, or alternate action switch that alternates between open (disconnected) and closed (connected) each time it's pressed. Available with LED options.


Standard Features 

  • Stainless steel wall plate accepts standard 1-1/8” mortise cylinder
  • Tamper-proof and slotted head screws included
  • Mortise Cylinders not included, available separately (CY-1, CY-1A)
  • Momentary or alternate switch, see model chart
  • SPDT or DPDT, see model chart
  • No LED, green LED, green and red LEDs, see model chart
  • Pneumatic time delay: 2 to 45 seconds, see model chart
  • Add WP for weather resistant cover and surface mount box. Available for single gang models only.


  • Contacts rated 4A at 28 VDC
  • LEDs operate on 12 or 24 VDC/VAC
  • Switch depth behind plate: 1-1/4”
  • Switches terminated in colored leads
Operating Temperature: +15 to 120F


Switch Type 1.75" Wide 1.75" Wide
Green LED 
1.75" Wide
Green LED
Red LED 
Single Gang Single Gang
Green LED 

Single Gang
Green LED
Red LED 

SPDT Momentary Action MCK-1 MCK-2 MCK-3 MCK-4* MCK-5* MCK-6
SPDT Alternate Action MCK-1-2 MCK-2-2 MCK-3-2 MCK-4-2* MCK-5-2* MCK-6-2*
DPDT Momentary Action MCK-1-3 MCK-2-3 MCK-3-3 MCK-4-3* MCK-5-3* MCK-6-3*
DPDT Alternate Action MCK-1-4 MCK-2-4 MCK-3-4 MCK-4-4* MCK-5-4* MCK-6-4*
Pneumatic Time Delay
(2 to 45 seconds)
N/A N/A N/A MCK-4-5* MCK-5-5* MCK-6-5*

*Weather resistant cover and surface mount back box available.  Add "-WP" to model number for the weather-proof option.

Mortise Cylinder Not Supplied
Model CY-1 and CY-1A sold separately