Commercial Key-Switch Cylinder | Standard Mortise Design | Keyed Different | Replacement Cylinder for Compatible Alarm Controls MCK Stations

Provide dependable keyed operation for commercial security and access-control systems with the Alarm Controls CY-1 Mortise Cylinder, a standard 1-1/8-inch mortise cylinder designed for compatible key-operated control stations.

Manufactured by Alarm Controls, an ASSA ABLOY company, the CY-1 features a straight cam, keyed-different configuration, and two supplied keys, making it a convenient solution for new installations or replacement of existing compatible cylinders.

Designed for use with Alarm Controls MCK Series Mortise Cylinder Key-Switch Stations, the CY-1 allows authorized personnel to operate a compatible key switch using a physical key.

Depending on the associated key-switch station and its wiring, the cylinder can be used as part of a system controlling electronic door locks, magnetic locks, electric strikes, gates, or other compatible low-voltage security equipment.

The keyed-different configuration provides an individual key combination rather than the common keying used with keyed-alike cylinders.

Ideal for commercial offices, industrial facilities, security stations, and controlled-access entrances, the Alarm Controls CY-1 offers a practical replacement or installation component for professional access-control systems.

Key Features

• Standard 1-1/8" Mortise Cylinder: Designed for compatible commercial mortise-cylinder control stations.

• Keyed Different: Intended for installations requiring separate key combinations rather than common keyed-alike operation.

• Straight Cam: Includes the manufacturer's standard straight cam configuration.

• Two Keys Included: Supplied with two matching keys for the individual cylinder.

• MCK Series Compatibility: Designed for use with compatible Alarm Controls mortise-cylinder key-switch stations.

• Key-Operated Access Control: Allows authorized operation of a properly installed key-switch mechanism.

• Commercial Security Applications: Suitable for compatible door-release and security-control installations.

• Replacement Cylinder: Useful when servicing compatible existing key-switch stations.

• Mechanical Key Operation: The cylinder itself does not require electrical power.

• Multiple Station Configurations: Compatible MCK stations are offered with momentary or alternate-action switches, depending on model.

• Professional Installation: Designed for integration into correctly specified commercial security equipment.

Product Specifications

• Manufacturer: Alarm Controls

• Parent Company: ASSA ABLOY

• Model / SKU: CY-1

• Series: CY Mortise Cylinder Series

• Product Type: Mortise Cylinder

• Cylinder Length: 1-1/8"

• Cam Type: Straight Cam

• Keying Configuration: Keyed Different (KD)

• Keys Included: 2

• Operation: Mechanical Key Rotation

• Primary Compatibility: Alarm Controls MCK Series Key-Switch Stations

• Mounting Configuration: Compatible Mortise Cylinder Opening

• Electrical Contacts: Not Included

• Power Requirements: None for the Cylinder Itself

• Electronic Switching Function: Provided by a Separate Compatible Key-Switch Station

• Manufacturer Part Number: CY-1

• Distributor Reference: AC-CY1

• UPC: 604840400022

• Application: Commercial Access Control and Security Key-Switch Systems

Finish and keyway note: Confirm the exact cylinder finish and keyway if matching an existing installation. These are not separately identified in Alarm Controls' published CY-1 specifications.

Included Components

The Alarm Controls CY-1 includes:

• One 1-1/8" keyed-different mortise cylinder

• One straight cam

• Two matching keys

Cylinder only: The key-switch faceplate, electrical switch, mounting station, wall box, wiring, and access-control equipment are not included.

Keyed-Different Operation

Individual Keying Configuration

The CY-1 is supplied keyed different, meaning it is intended to use a different key combination from other separately keyed cylinders.

The two supplied keys operate the same CY-1 cylinder.

This configuration is useful when separate rooms, entrances, or control stations should have different authorized keys.

How It Works

When installed in a compatible Alarm Controls mortise-cylinder key-switch station, the cylinder's cam mechanically operates the station's switch mechanism.

The electrical response depends on the connected station.

For example, a properly configured system may use the key switch to:

• Initiate electronic door release

• Operate a magnetic-lock control circuit

• Provide an authorized key-operated input

• Activate a compatible electric-strike controller

• Control an approved gate or security circuit

• Provide manual control of other compatible low-voltage equipment

Important: The CY-1 does not contain its own electrical switch or relay. These functions are provided by the separately purchased key-switch station.

Compatible Alarm Controls Equipment

MCK Series Mortise Cylinder Key-Switch Stations

Alarm Controls MCK Series stations are designed to accept standard 1-1/8-inch mortise cylinders, including the CY-1.

Compatible configurations include narrow-stile and single-gang stations with various switch functions.

Examples include:

• MCK-1 Series: Narrow-stile key-switch stations

• MCK-2 Series: Narrow-stile stations with LED options

• MCK-3 Series: Narrow-stile stations with dual-color LED options

• MCK-4 Series: Single-gang key-switch stations

• MCK-5 Series: Single-gang stations with LED options

• MCK-6 Series: Single-gang stations with additional LED configurations

Depending on the station model, available switch configurations include momentary action, alternate action, SPDT, and DPDT arrangements.

The electrical specifications apply to the selected MCK station, not the CY-1 cylinder itself.

Alarm Controls CY-1A – Keyed-Alike Alternative

For installations requiring multiple cylinders to operate with the same key combination, Alarm Controls offers the CY-1A.

• CY-1: Keyed Different

• CY-1A: Keyed Alike

Both models use a standard 1-1/8-inch mortise-cylinder design with a straight cam and two supplied keys.

Recommended Applications

• Commercial Access-Control Systems

• Alarm Controls MCK Key-Switch Stations

• Electronic Door-Release Systems

• Magnetic Lock Control Stations

• Electric Strike Control Systems

• Commercial Office Buildings

• Hollow Metal Door Security

• Aluminum Storefront Entrances

• Secured Employee Areas

• Industrial and Manufacturing Facilities

• Warehouses and Distribution Centers

• Schools and Institutional Buildings

• Government Facilities

• Security Control Stations

• Replacement Mortise Cylinders

• Commercial Door Hardware Maintenance

Installation & Compatibility

The Alarm Controls CY-1 should be installed in a compatible mortise-cylinder key-switch station or other approved assembly designed for its cylinder length and straight-cam configuration.

Installation Considerations

• Confirm the existing station accepts a 1-1/8-inch mortise cylinder.

• Verify that a straight cam is required.

• Confirm the desired keyed-different configuration.

• Install the cylinder following the station manufacturer's instructions.

• Ensure the cylinder is properly secured.

• Verify that the cam correctly operates the station's mechanical switch actuator.

• Test both supplied keys.

• Confirm the connected key-switch station operates as intended.

Important Installation Information

• This listing is for the Alarm Controls CY-1 cylinder only.

• The CY-1 is supplied keyed different.

• The CY-1A is the separately ordered keyed-alike version.

• Each CY-1 includes two matching keys.

• The cylinder includes a straight cam.

• The key-switch station and electrical switch contacts are not included.

• The cylinder does not independently release an electronic lock.

• The cylinder does not provide its own electrical power.

• It does not function as a complete access-control system.

• Confirm compatibility before substituting it for a cylinder with a different cam or length.

• If matching existing keys or a master-key system, verify available keying services and keyway requirements with the supplier.

• Install according to the manufacturer's instructions and the requirements of the connected security system.

Why Choose the Alarm Controls CY-1?

The Alarm Controls CY-1 Mortise Cylinder provides a convenient key-operated component for compatible commercial key-switch stations.

Featuring a standard 1-1/8-inch body, straight cam, keyed-different configuration, and two supplied keys, the CY-1 is a practical choice for maintaining or installing Alarm Controls MCK Series access-control stations.

Whether replacing an existing cylinder or building a new key-operated electronic security system, the CY-1 offers a straightforward solution for compatible professional commercial installations.