The MCK-4-4 from Alarm Controls is a mortise cylinder key switch with single gang DPDT alternate functionality, designed for durability and ease of use. This switch is perfect for enhancing security systems and provides reliable performance with its high-quality materials and construction.
Alarm Controls MCK-4-4 Key Switch Features
- Stainless Steel Plate: Accepts standard 1-1/8″ mortise cylinders, ensuring compatibility and longevity.
- Compact Depth: Depth behind plate is 1.25″, allowing for easy installation in tight spaces.
- Color-Coded Leads: Switches terminated in colored leads simplify wiring and installation processes.
- High Rating Contacts: Switch contacts rated at 4A @ 28VDC provide reliable electrical performance for various applications.
- LED Compatibility: Operates on 12 or 24 volts AC or DC, enhancing visibility and functionality in different setups.
- Tamper-Proof Design: Includes tamper-proof and slotted-head screws, offering added security against unauthorized access.
Alarm Controls MCK-4-4 Detailed Specifications
| Feature | Details |
| Model | MCK-4-4 |
| Type | Mortise Cylinder Key Switch |
| Plate Material | Stainless Steel |
| Depth Behind Plate | 1.25 inches |
| Switch Contact Rating | 4A @ 28VDC |
| LED Voltage Operating Range | 12 or 24 Volts AC or DC |
| Security Features | Tamper-Proof, Slotted-Head Screws |



















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