The MCK-3 from Alarm Controls is a mortise cylinder key switch featuring a 1.75″ SPDT momentary design, equipped with both green and red LED indicators for enhanced visibility and functionality. This robust switch offers a reliable solution for secure access control, combining convenience with safety.
Alarm Controls MCK-3 Key Switch Features
- Stainless Steel Plate: Accepts standard 1-1/8″ mortise cylinders for easy installation and durability.
- Compact Design: Depth behind plate is just 1.25″, allowing for versatile placement in various settings.
- Color-Coded Leads: Switches terminated in colored leads simplify wiring and ensure correct connections.
- High-Performance Contacts: Rated for 4A @ 28VDC, ensuring reliable operation under load.
- Versatile LED Operation: LEDs operate on 12 or 24 volts AC or DC, providing flexibility in power source options.
- Tamper-Proof Design: Includes slotted-head screws to enhance security and prevent unauthorized access.
Detailed Specifications for Alarm Controls MCK-3
| Product Type | Mortise Cylinder Key Switch |
| Switch Type | 1.75″ SPDT Momentary |
| Material | Stainless Steel |
| Depth Behind Plate | 1.25″ |
| Contact Rating | 4A @ 28VDC |
| LED Voltage | 12 or 24 Volts AC or DC |
| Screws | Tamper-Proof and Slotted-Head Provided |



















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