The MCK-3-3 from Alarm Controls is a mortise cylinder key switch with 1.75″ DPDT momentary, featuring both green and red LED indicators for enhanced visibility and functionality.
Alarm Controls MCK-3-3 Key Switch Features
- Stainless Steel Plate: Accepts standard 1-1/8″ mortise cylinders, ensuring compatibility and durability.
- Compact Design: Depth behind plate is only 1.25″, allowing for easy installation in tight spaces.
- Colored Leads: Switches are terminated in colored leads for straightforward wiring and identification.
- High Rated Contacts: Switch contacts are rated for 4A @ 28VDC, providing reliable performance in various applications.
- Versatile LED Operation: LEDs operate on 12 or 24 volts AC or DC, offering flexibility in power supply options.
- Tamper-Proof Design: Comes with slotted-head screws for added security and protection against unauthorized access.
Detailed Specifications for Alarm Controls MCK-3-3
| Feature | Details |
| Model | MCK-3-3 |
| Type | Mortise Cylinder Key Switch |
| Switch Type | DPDT Momentary |
| Plate Material | Stainless Steel |
| Compatibility | Standard 1-1/8″ Mortise Cylinders |
| Depth Behind Plate | 1.25″ |
| Contact Rating | 4A @ 28VDC |
| LED Voltage | 12 or 24 Volts AC or DC |
| Screw Type | Tamper-Proof and Slotted-Head |



















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