18" Stainless Steel Armored Flex | 1/4" ID | Surface-Mount Power Transfer for Electrified Doors

Provide a simple, economical wiring path between the door frame and electrified door hardware with the SDC PT-2U Surface-Mount Power Transfer Door Loop.

Designed by Security Door Controls (SDC), the PT-2U uses an 18" stainless-steel armored flexible conduit to route field-supplied wiring from the frame into the door for compatible electric locks, exit devices, and access-control hardware.

The surface-mounted design makes the PT-2U an excellent choice for retrofit and new-installation projects where a concealed mortise power transfer is not required.

Key Features

• Genuine SDC / Security Door Controls

• Model PT-2U

• Surface-mount power transfer loop

• 18" stainless-steel armored flex conduit

• 1/4" inside diameter

• Durable plastic end caps

• Current SDC configuration uses black end caps

• 630 finish designation

• Allows door opening up to approximately 180°

• Routes power and/or control wiring between frame and door

• Designed for field-supplied wiring

• Wires are not included

• Recommended for hollow metal and aluminum-frame applications

• Economical alternative to concealed power-transfer devices

• Ideal for access-control and electrified door systems

Surface-Mount Power Transfer

The PT-2U creates a protected pathway between the stationary frame and moving door.

Field wiring is routed through the armored flexible conduit, allowing compatible electrical hardware mounted in or on the door to connect back to the building's access-control or power system.

Typical applications include:

• Electrified locksets

• Electric mortise locks

• Electric cylindrical locks

• Electrified exit devices

• Electric latch retraction

• Request-to-exit devices

• Door monitoring circuits

• Other compatible low-voltage door hardware

18" Stainless Steel Armored Flex

The PT-2U uses:

18" Stainless Steel Armored Flexible Conduit

The armored construction helps protect electrical wiring as the door repeatedly opens and closes.

Inside Diameter: 1/4"

The installer supplies the conductors required for the connected door hardware.

Less Wires

The PT-2U is supplied without electrical conductors.

This allows the installer to select the appropriate wiring based on the requirements of the connected device.

Before installation, verify:

• Number of conductors

• Wire gauge

• Voltage

• Current draw

• Signal requirements

• Connected hardware

• Access-control system requirements

Up to 180° Door Opening

SDC specifies the PT-2U for door travel of up to approximately:

180°

Actual usable opening angle depends on installation location, door geometry, frame conditions, and available clearance.

Recommended Door & Frame Applications

SDC recommends the PT Series surface loops for use with:

• Hollow metal frames

• Aluminum frames

The PT-2U is well suited for commercial openings where exposed surface-mounted power transfer is acceptable.

Product Specifications

Brand: SDC / Security Door Controls
Model: PT-2U
Product Type: Surface-Mount Power Transfer Loop
Conduit Material: Stainless Steel
Conduit Type: Armored Flexible
Conduit Length: 18"
Inside Diameter: 1/4"
End Caps: Plastic
End Cap Color: Black
Finish: 630
Wires Included: No
Maximum Door Opening: Up to 180°
Approximate Weight: 0.6 lb
Application: Electrified Commercial Doors
Mounting: Surface Mount

Common Applications

Ideal for:

• Hollow metal doors

• Aluminum storefront doors

• Commercial entrance doors

• Access-controlled openings

• Office buildings

• Schools

• Universities

• Hospitals

• Healthcare facilities

• Warehouses

• Industrial facilities

• Government buildings

• Institutional facilities

PT-2U vs. Concealed Power Transfer

PT-2U Surface Loop

Best when:

• Simple installation is desired

• Retrofit installation is required

• Surface-mounted conduit is acceptable

• Installer needs flexibility in wire selection

• Cost-effective power transfer is the priority

Concealed Mortise Power Transfer

Better when:

• Wiring must be concealed

• Increased tamper resistance is needed

• Architectural appearance is a priority

• Door and frame can accommodate mortised hardware

Important Fire-Rated Opening Note

The PT-2U should not be assumed to carry the same fire-door listing as SDC's PT-5 concealed power transfer.

SDC specifically identifies its UL 10C 3-hour fire-test certification with the PT-5, not the PT-2U.

For fire-rated openings, verify that the selected power-transfer device is approved for the complete rated assembly before installation.

Installation Notes

Before installation, verify:

• Door handing

• Maximum door swing

• Mounting location

• Conduit clearance

• Frame construction

• Required conductor count

• Wire gauge

• Voltage

• Current requirements

• Connected electrified hardware

Allow enough conduit movement for the door to reach its required opening angle without stretching, pinching, or sharply bending the armored loop.

What's Included

(1) SDC PT-2U Surface-Mount Power Transfer Loop