Replacement Door Controller PWA | EE / ER Delayed Egress & Electric Latch Retraction | Detex 84-800

Restore control functionality in a compatible Detex electrified-door system with the Detex 102879-3 Logic Controller, a replacement Door Controller PWA designed for Detex systems combining Delayed Egress (EE) with Electric Latch Retraction (ER).

Detex factory documentation specifically identifies 102879-3 as the Door Controller PWA inside the 84-800 Controller / Power Supply, which is designed for a single-door EExER delayed-egress with latch-retraction application.

This listing is for the controller circuit board only and is intended for service, repair, and replacement of compatible Detex control systems.

Key Features

• Genuine Detex replacement controller board

• Part Number: 102879-3

• Door Controller PWA

• Designed for compatible EE / ER systems

• Used in the Detex 84-800 Controller / Power Supply

• Supports electric latch-retraction control

• Interfaces with delayed-egress control circuitry

• Multiple dry-contact control inputs

• Adjustable latch-retraction hold time

• Door-operator signal relay

• Adjustable door-operator signal delay

• Onboard activity indicators

• Commercial access-control replacement component

• Circuit board only

• Complete power supply not included

Designed for Detex 84-800 Systems

Detex identifies the 84-800 as a controller and power-supply system for:

Single Door Delayed Egress with Latch Retraction – EExER

Within the 84-800 enclosure, the major control components include:

• 102879-3 Door Controller PWA

• Delayed Egress PWA

• Regulated power-supply board

• Opto-isolator circuitry

The 102879-3 handles the latch-retraction and related door-control functions within that system.

Electric Latch Retraction Control

The controller provides output control for the compatible Detex ER electric latch-retraction device.

When an approved access-control input is activated, the board can energize the latch-retraction output to retract the exit-device latch for authorized access or door operation.

Detex identifies three normally-open dry-contact control inputs on the controller.

Adjustable Latch Hold Time

The controller provides an adjustable latch-retraction hold delay.

Detex specifies an adjustment range of up to approximately:

30 Seconds

The hold-time adjustment determines how long the latch remains retracted after the initiating control input is released.

Door Operator Signal

The 102879-3 controller also provides an auxiliary SPDT dry-contact door-operator signal.

This output can be used to signal a compatible automatic door operator or other equipment after the latch has retracted.

Detex identifies the relay terminals as:

• Normally Closed

• Common

• Normally Open

Adjustable Operator Delay

The automatic-door operator signal can be delayed after latch retraction.

Detex specifies an adjustable delay of approximately:

0.5 to 3 Seconds

This allows the electric latch to retract before the automatic operator begins opening the door.

EE-to-ER Timing

In the 84-800 EExER application, the system also provides an adjustable timing relationship between the delayed-egress release and latch retraction.

Detex identifies this differential adjustment at approximately:

0.25 to 1 Second

This adjustment is factory set and typically does not require field modification.

Onboard Indicators

The controller includes visual indicators for system operation and troubleshooting.

Detex documentation identifies indicators for:

• Controller power

• Door output activity

• Auxiliary output activity

These LEDs help technicians diagnose control and output conditions during installation or service.

24VDC System Application

Within the Detex 84-800 system, the power supply is configured for 24VDC, and the controller's power indicator confirms when 24V is being supplied to the board.

The 102879-3 should be treated as a replacement system board, not as a standalone power supply.

Product Specifications

Manufacturer: Detex
Part Number: 102879-3
Product Type: Door Controller PWA / Logic Controller
Primary Application: EE / ER Door Control
Compatible System: Detex 84-800
Application Type: Single-Door Delayed Egress + Latch Retraction
System Voltage: 24VDC in 84-800 configuration
Control Inputs: Normally Open Dry Contact
Latch Hold Adjustment: Up to Approx. 30 Seconds
Door Operator Relay: SPDT Dry Contact
Operator Delay: Approx. 0.5–3 Seconds
EE-to-ER Differential: Approx. 0.25–1 Second
Mounting: Inside Compatible Detex Control Enclosure
Use: Replacement / Repair / Service

Common Applications

Ideal for servicing compatible Detex systems installed at:

• Delayed-egress doors

• Access-controlled exits

• Healthcare facilities

• Hospitals

• Assisted living facilities

• Schools

• Government buildings

• Secure institutional facilities

• Commercial access-controlled openings

• Automatic door applications with latch retraction

Replacement Applications

Replace the 102879-3 when the existing controller board has been properly diagnosed as:

• Failed

• Damaged

• Producing unreliable latch-retraction output

• Failing to respond to access-control inputs

• No longer producing the proper operator signal

• Damaged from electrical faults or component failure

Troubleshoot the complete system before replacing the board, including the power supply, exit device, wiring, delayed-egress board, and connected controls.

Important Compatibility Note

The 102879-3 is not a universal standalone access-control panel.

Detex factory documentation specifically shows it as the Door Controller PWA in the 84-800 EExER system.

Before ordering, verify:

• Existing controller part number is 102879-3

• Detex system model

• Existing EE / ER configuration

• Power-supply condition

• Delayed-egress controller

• Exit-device model

• Existing wiring

• Door-operator interface requirements

Do not substitute another 102879 revision solely because the boards appear similar.

What's Included

(1) Detex 102879-3 Door Controller PWA