S&R Power Supply PWA | 24VDC Power Board | Replacement Board for Series 800 Controllers | EExER Delayed Egress & Latch Retraction

The Detex 104395-2L Transformer / Power Supply Board is a genuine replacement S&R Power Supply PWA used in compatible Detex 84-800 and 85-800 Series controller/power supply systems.

Designed as part of Detex's integrated electrified exit-device control system, the 104395-2L provides the power-supply functionality required for compatible Delayed Egress with Electric Latch Retraction (EExER) applications.

Detex identifies the power supply boards in these systems as being configured for 24VDC operation.

Key Features

• Genuine Detex replacement power supply board

• Detex part number 104395-2L

• Official Detex designation: S&R Power Supply PWA

• Compatible with the Detex 84-800

• Used as one of the power boards in the Detex 85-800

• Configured for 24VDC operation

• Designed for integrated Delayed Egress + Electric Latch Retraction

• Supports Detex EExER electrified exit-device systems

• Onboard latch-retraction hold-time adjustment

• Designed for commercial life-safety and access-control applications

• Replacement component for existing Series 800 controller systems

Compatible Detex Controllers

Detex 84-800

The 84-800 is designed for a single-door EExER application and uses the 104395-2L S&R Power Supply PWA.

The 84-800 provides:

• Single-door control

• Delayed egress functionality

• Electric latch retraction control

• Regulated and filtered 24VDC power

• Fire-alarm interface

• Automatic door operator signaling

Detex 85-800

The 85-800 is designed for two-door / pair-of-door applications and incorporates two power boards:

• 104395-2L

• 104395-2R

Important: If replacing a power board in an 85-800, verify that the existing board is specifically marked 104395-2L before ordering.

24VDC Power Supply Application

The Detex 84-800 and 85-800 controllers convert building power into the regulated and filtered 24VDC power required by compatible Detex electrified exit-device systems.

The regulated power supply helps protect the associated control electronics and provides consistent power for compatible electric latch-retraction and delayed-egress hardware.

Adjustable Latch Retraction Hold Time

The 104395-2L power supply board incorporates an onboard R13 hold-time adjustment.

The latch-retraction hold period can be increased by turning the adjustment clockwise, with Detex specifying adjustment up to approximately 30 seconds.

This allows the controller to maintain latch retraction for the required period after an activation input is released.

Product Specifications

Manufacturer: Detex
Part Number: 104395-2L
Official Description: S&R Power Supply PWA
Product Type: Power Supply / Transformer Circuit Board
Output Configuration: 24VDC
Compatible Controller: Detex 84-800
Compatible Controller: Detex 85-800 – 2L Board Position
Application: Delayed Egress with Electric Latch Retraction
Electrified Function: EExER
Latch Hold Adjustment: Up to Approximately 30 Seconds
Application Type: Commercial / Institutional Access & Egress Control

Designed for EExER Applications

The Detex 84-800 and 85-800 systems are specifically engineered to integrate:

• Delayed Egress

• Electric Latch Retraction

• Fire alarm release

• Access-control inputs

• Door operator signaling

• Exit-device power and control

The 104395-2L operates as a key power-supply component within this integrated system.

Replacement Applications

The Detex 104395-2L is ideal when servicing an existing Series 800 controller with a failed or damaged power board.

Potential symptoms requiring power-supply troubleshooting can include:

• No 24VDC output

• Electrified exit device not operating

• Latch retraction failing to activate

• Intermittent power to door hardware

• Power supply board damage

• Failed controller power section

Proper electrical diagnosis should be performed before replacing the board.

Important Installation Note

High voltage is present inside the 84-800 and 85-800 controller enclosures.

Detex specifies that connections and adjustments must be performed with the power supply de-energized and the main power switch in the OFF position. Installation and service should be performed by qualified personnel familiar with commercial electrified door hardware.

What's Included

(1) Detex 104395-2L S&R Power Supply PWA / Transformer Board

Controller enclosure, door controller board, delayed-egress board, 104395-2R board, wiring harnesses, exit device, and other components are sold separately unless specifically stated otherwise.