Complete Commercial Access Control Package | 1200S Fail-Safe Maglock | KP-400 Digital Keypad | TS-2 Exit Station | Power Supply Included

Secure commercial entrances with the Alarm Controls LNB-12 Lock N' A Box, a heavy-duty electromagnetic door-locking package designed for convenient electronic access control.

Manufactured by Alarm Controls, an ASSA ABLOY company, the LNB-12 combines four essential access-control components in one convenient kit, simplifying the process of selecting compatible door-locking equipment.

The package includes a 1200S electromagnetic lock with 1,200 pounds of rated holding force, a KP-400 vandal-resistant weatherproof digital keypad, an illuminated TS-2 PUSH TO EXIT station, and a UL-listed plug-in DC power supply.

The 1200S magnetic lock features fail-safe operation, allowing the electromagnet to secure the door when energized and release its magnetic holding force when power is interrupted.

The included KP-400 provides keyless entry using programmed access codes. Its backlit metal keys, stainless steel faceplate, IP66-rated construction, and programmable relay outputs make it suitable for demanding commercial entrance applications.

For exiting, the TS-2 station features a large illuminated green push button clearly marked PUSH TO EXIT, providing convenient manual activation of the connected door-release circuit.

Recommended by Alarm Controls for interior and exterior door applications, the LNB-12 is suitable for properly designed commercial offices, warehouses, schools, industrial facilities, and secured employee entrances.

Key Features

• Complete Magnetic Lock Kit: Includes the 1200S maglock, KP-400 keypad, TS-2 exit station, and DC power supply.

• 1,200 LB Holding Force: Heavy-duty electromagnetic lock provides 1,200 pounds of rated holding strength.

• Fail-Safe Magnetic Locking: Releases magnetic holding force when electrical power is removed.

• Weatherproof Digital Keypad: KP-400 features an IP66-rated enclosure for suitable indoor and outdoor installations.

• Vandal-Resistant Keypad Construction: Stainless steel faceplate, tamper-resistant screws, and durable die-cast metal keys.

• Backlit Keypad: Illuminated metal keys provide improved visibility in low-light conditions.

• 100 Primary User Codes: Supports up to 100 users on keypad Output 1.

• Secondary Keypad Output: Supports 10 additional users on Output 2.

• Dual Relay Outputs: Allows the keypad to control appropriately connected electronic locking equipment.

• Programmable Access Functions: Includes passage mode, false-code lockout, and other configurable security settings.

• Built-In Keypad Tamper Switch: Provides additional security monitoring capability.

• KP-400 Status Indicators: Red, green, and yellow LEDs provide programming and operating feedback.

• TS-2 Request-to-Exit Station: Large green illuminated PUSH TO EXIT button included.

• Momentary Exit Button: Activates the compatible door-release circuit when pressed.

• Plug-In Power Supply Included: Provides operating power for the manufacturer-specified kit configuration.

• 12/24V DC Maglock Compatibility: The 1200S magnetic lock supports field-selectable DC operating voltages.

• 1200S E-Z Mounting System: Includes a header mounting bracket and drilling template.

• Instant-Release Technology: Designed to minimize residual magnetic holding after power interruption.

• Built-In Arc Suppression: Helps reduce electrical switching transients.

• US28 Clear Anodized Finish: Professional architectural finish on the magnetic lock.

• Commercial Door Applications: Suitable for properly designed controlled-entry commercial doorways.

• Optional Motion REX Version: LNB-12-SREX configuration adds the SREX-100 request-to-exit motion sensor.

• Limited Lifetime Kit Warranty: Subject to Alarm Controls' applicable warranty terms.

Included Components

1. Alarm Controls 1200S – 1200 LB Electromagnetic Lock

The included 1200S magnetic lock delivers strong electromagnetic holding power for a single commercial door.

Features:

• 1,200 lb rated magnetic holding force

• Fail-safe locking operation

• Field-selectable 12V DC or 24V DC

• US28 clear anodized aluminum finish

• Instant-release technology

• Built-in arc suppression

• Corrosion-resistant plated components

• E-Z mount header bracket

• Installation template

• Self-drilling mounting screws

• UL-listed electromagnetic locking assembly

1200S Specifications:

• Holding Force: 1,200 lbs.

• Voltage: 12V DC or 24V DC

• Current Draw at 12V DC: 505mA

• Current Draw at 24V DC: 260mA

• Magnet Length: 10-1/2"

• Magnet Height: 2-7/8"

• Magnet Depth: 1-1/2"

• Armature Length: 7-1/4"

• Armature Height: 2-3/8"

• Armature Thickness: 5/8"

• Operating Temperature: 14°F to 131°F (-10°C to 55°C)

Important: The standard 1200S does not include the bond-monitoring, door-position-monitoring, or LED features found on selected higher-option Alarm Controls maglocks.

2. Alarm Controls KP-400 – Weatherproof Digital Keypad

The KP-400 is a programmable access-control keypad designed for commercial and industrial applications requiring durable, weather-resistant keyless entry.

Features:

• Vandal-resistant construction

• IP66 weather-resistant rating

• 302 stainless steel faceplate

• Black powder-coated die-cast aluminum surface-mount box

• Tamper-resistant mounting screws

• Illuminated metal keys

• 10 numeric buttons plus * and # keys

• Programmable access codes

• Up to 100 users on Output 1

• Up to 10 users on Output 2

• Programmable passage mode

• False-code lockout

• Duress output

• Door-prop-open alarm function

• Request-to-exit input

• Integrated tamper switch

• Red, green, and yellow status LEDs

KP-400 Electrical Specifications:

• Operating Voltage: 12V or 24V AC/DC, Auto-Sensing

• Current Draw at 12V DC: 10mA Standby / 100mA Active

• Current Draw at 24V DC: 22mA Standby / 120mA Active

• Output 1: SPDT, 5A at 24V DC

• Output 2: SPDT, 1A at 24V DC

• Operating Temperature: -4°F to 158°F (-20°C to 70°C)

• Environmental Rating: IP66

• Dimensions with Back Box: 3-1/8" W x 4-1/2" H x 1-3/4" to 2-1/2" D

The KP-400 provides a convenient method of controlling the magnetic lock using programmed entry credentials.

3. Alarm Controls TS-2 – Illuminated Request-to-Exit Station

The included TS-2 provides a clearly identified manual exit-control point.

Features:

• Large 2" green square button

• PUSH TO EXIT lettering

• High-brightness LED illumination

• Single-gang stainless steel mounting plate

• Momentary SPDT switching action

• Suitable for connection to compatible magnetic-lock release circuits

• 10" colored connection leads

TS-2 Specifications:

• Switch Type: Momentary SPDT

• Push Button: Green, Illuminated

• Button Size: 2"

• Faceplate: 430 Stainless Steel

• Mounting: Single Gang

• LED Voltage: 12V or 24V AC/DC

• Switch Depth Behind Plate: 1-1/2"

The TS-2 is intended to work with properly designed door-release equipment and the required emergency-egress provisions.

4. Plug-In DC Power Supply

The LNB-12 includes a UL-listed plug-in DC power supply for the supplied equipment.

Alarm Controls' 2025 package literature specifies:

• Output: 12V DC

• Current: 700mA

• Type: Plug-In Power Supply

• Listing: UL Listed

• Connection: Supplied Leads

Important: Published LNB-12 documents from different revisions list alternative power supply ratings. Verify the actual power supply included with the kit before wiring or confirming the electrical specifications for a customer.

Product Specifications

• Manufacturer: Alarm Controls

• Parent Company: ASSA ABLOY

• Model / SKU: LNB-12

• Product Family: Lock N' A Box

• Product Type: Magnetic Lock Access Control Kit

• Door Configuration: Single Door

• Holding Force: 1,200 lbs.

• Included Maglock: 1200S

• Included Keypad: KP-400

• Included Exit Station: TS-2

• Power Supply Included: Yes

• Maglock Operation: Fail-Safe

• Maglock Voltage: 12/24V DC, Field Selectable

• Maglock Finish: US28 Clear Anodized Aluminum

• Keypad Construction: Stainless Steel Faceplate / Die-Cast Metal Housing

• Keypad Environmental Rating: IP66

• Primary Keypad User Capacity: 100

• Secondary Keypad User Capacity: 10

• Exit Station Button: Illuminated Green PUSH TO EXIT

• Keypad Mounting: Surface Mount

• Exit Station Mounting: Single Gang

• Maglock Mounting: Header / Frame Mount

• Maglock Bond Sensor: Not Included

• Maglock Door Position Sensor: Not Included

• Maglock LED Indicator: Not Included

• Motion REX Sensor: Optional LNB-12-SREX Configuration

• Application: Interior or Suitable Exterior Door Installations

• UPC: 604840249508

• Warranty: Manufacturer Limited Lifetime Kit Warranty

Recommended Applications

• Commercial Office Buildings

• Hollow Metal Commercial Doors

• Professional Office Suites

• Secured Employee Entrances

• Warehouse Personnel Doors

• Manufacturing Facilities

• Schools and Universities

• Hospitals and Healthcare Facilities

• Assisted Living Facilities

• Government and Institutional Buildings

• Retail Back Entrances

• Commercial Building Security

• Industrial Access-Control Systems

• Controlled-Entry Commercial Doors

• Employee Keypad Access Systems

Access Control & Door Release Functions

1. Heavy-Duty Electromagnetic Locking

The included 1200S electromagnetic lock provides 1,200 lbs of rated holding force when energized and correctly aligned with its armature plate.

The magnetic lock is mounted to the appropriate frame or header, while the armature plate attaches to the door.

Correct installation and full magnetic contact are essential for achieving rated holding performance.

2. Digital Keypad Entry

The KP-400 allows authorized personnel to enter programmed access codes.

After a valid code is accepted, the keypad activates the configured relay to operate the electronic locking circuit.

The keypad supports multiple user credentials, allowing access to be managed without distributing physical keys.

3. Dual Keypad Outputs

The KP-400 includes two programmable relay outputs.

The primary relay can be used for the magnetic lock, while the secondary output may support another appropriately connected device.

Using the second output requires additional wiring and equipment as appropriate for the application.

4. Fail-Safe Magnetic Lock Operation

The 1200S is designed to secure the door only while sufficient electrical power is supplied.

Power Applied: The magnet is energized and develops magnetic holding force.

Power Interrupted: The magnet releases, allowing the door to be opened.

An approved egress-control design must ensure appropriate release under all required operating conditions.

5. Illuminated Push-to-Exit Control

The TS-2 provides a clearly identified manual button for operating the door-release circuit.

The illuminated green PUSH TO EXIT button is easily recognizable and provides convenient user operation when integrated according to the manufacturer's wiring instructions.

6. Programmable Keypad Security

The KP-400 offers programmable security features such as:

• Individual user codes

• Separate relay outputs

• Passage mode

• False-code lockout

• Request-to-exit input

• Tamper monitoring

• Duress output

• Door-prop-open signaling

These functions help installers customize the access-control system for the particular commercial entrance.

7. Optional Motion Request-to-Exit

For installations requiring a motion-based request-to-exit device, Alarm Controls offers the LNB-12-SREX.

This version includes the standard LNB-12 components plus an SREX-100 active request-to-exit motion sensor.

The standard LNB-12 does not include the SREX-100.

Installation & Compatibility

The Alarm Controls LNB-12 is intended for professional installation on compatible commercial doors.

The 1200S magnetic lock is mounted to the appropriate door header or frame. The matching armature plate is secured to the door so the magnet and armature align correctly.

The KP-400 keypad is installed at the authorized entry point, while the TS-2 exit station is installed at the approved interior release location.

The supplied components are then wired according to the manufacturer's installation instructions and the applicable access-control and emergency-egress design.

Installation Considerations

• Verify door handing and swing direction.

• Confirm sufficient mounting space above the opening.

• Use appropriate hardware for the door and frame construction.

• Properly align the magnet and armature plate.

• Install the KP-400 keypad in a suitable location.

• Install the TS-2 request-to-exit station at the approved exit location.

• Verify the voltage and output capacity of the packaged power supply.

• Configure the magnetic lock to match the operating supply voltage.

• Program authorized keypad credentials and relay timing.

• Connect the required door-release controls.

• Integrate any required fire alarm and emergency-release interfaces.

• Test normal entry, exit, power-loss release, and emergency functions.

Important Installation Information

• This listing is for the LNB-12 kit, not the individual 1200S maglock.

• The kit includes one magnetic lock, one digital keypad, one illuminated exit station, and one plug-in DC power supply.

• The 1,200 lb holding-force rating applies to the included 1200S electromagnet.

• The 1200S is fail-safe and releases when electrical power is interrupted.

• The KP-400 is IP66-rated; the same environmental rating does not automatically apply to every other component in the kit.

• The TS-2 should be installed in an appropriate protected location unless the actual equipment and accessories are approved for the exposure.

• The standard 1200S does not include a bond sensor, door-position sensor, or lock-status LED.

• The standard LNB-12 does not include an SREX-100 motion sensor.

• The LNB-12-SREX is a separately ordered configuration.

• Power supply output varies among published documentation revisions; verify the packaged supply before installation.

• A maglock, keypad, and push-to-exit station do not by themselves guarantee compliance with applicable means-of-egress codes.

• Additional emergency-release equipment, request-to-exit sensing, fire alarm interfaces, or approved release hardware may be necessary.

• Inswinging doors and nonstandard frames may require additional mounting brackets.

• A magnetic lock does not replace a mechanical door closer or provide mechanical latching.

• Wiring materials, specialty brackets, and supplemental safety equipment are sold separately unless specifically included.

• Installation must follow the manufacturer's instructions and the requirements of the local Authority Having Jurisdiction.

Why Choose the Alarm Controls LNB-12?

The Alarm Controls LNB-12 Lock N' A Box combines high-strength electromagnetic locking with programmable keypad access and illuminated manual exit control in a convenient commercial security package.

Its 1,200 lb fail-safe magnetic lock, weather-resistant KP-400 digital keypad, TS-2 request-to-exit station, and included DC power supply simplify the selection of components for appropriately designed access-control installations.

For commercial offices, warehouses, institutional buildings, and secured employee entrances, the LNB-12 offers strong magnetic holding force and practical electronic entry management in one manufacturer-packaged kit.