HES 9400 Electric Strike: Complete Specification and Installation Guide

The HES 9400 is the slim-line surface-mounted electric strike from HES (Hardware Electronic Systems, an ASSA ABLOY brand) designed for rim exit devices with a 1/2-inch Pullman latch. The HES 9400 electric strike is 5/8 inch thick, completely surface-mounted with no frame cutting required, and exceeds ANSI/BHMA A156.31 Grade 1 standards on every performance metric. It carries UL 1034 burglary-resistant listing, outdoor rating for exterior applications, field-selectable fail safe and fail secure, dual voltage 12 or 24VDC, and a SecuriCare five-year no-fault warranty. The HES 9400 installs on an existing frame in minutes and works with Von Duprin, Sargent, Corbin Russwin, and Falcon rim exit devices carrying a 1/2-inch Pullman latch.

HES 9400: Full Confirmed Technical Specifications

All specifications confirmed from the official HES 9400 Series data sheet:

What "Exceeds ANSI Grade 1" Means on the HES 9400

The HES 9400 tests above the ANSI/BHMA A156.31 Grade 1 thresholds on static strength, dynamic impact, and endurance. On commercial hardware schedules specifying "Grade 1 or better," the HES 9400 qualifies and provides a measured performance margin above the baseline. On any project where the AHJ verifies hardware listings during acceptance testing, the HES 9400's documented performance above Grade 1 provides that confirmation.

Two Critical Relay Behaviors Every Installer Must Know

2-second relay drop after door close: When the HES 9400 fires its relay and the door opens then closes, the relay drops 2 seconds after the door closes — regardless of the configured latch timer. The door position switch on Terminal D confirms door close and triggers the 2-second drop. This eliminates the unauthorized re-entry window that would exist if the full latch timer kept running after door close. Terminal D wiring to the door position switch is functionally required for this security feature.

10-second timeout without door opening: If the HES 9400 fires its relay but the door never opens, the relay drops after 10 seconds. This covers scenarios where a REX sensor triggers and the person does not proceed through the door.

Fail Safe vs Fail Secure on the HES 9400

The HES 9400 fail mode is field selectable during installation — no factory conversion required.

Fail safe: Strike releases when power is removed. Door defaults to unlocked. Required for egress path doors, fire alarm-integrated entries, stairwell access doors, and any opening where NFPA 101 mandates free exit during emergencies.

Fail secure: Strike stays locked when power is removed. Required for server rooms, pharmacy storage, financial vaults, and restricted access areas where the locked state is the safe default during any power interruption.

For the complete code-based breakdown by occupancy type, see the fail safe vs fail secure guide on this site.

HES 9400 Monitoring Options: LBM and LBSM

Both options are factory-installed and must be specified at order time. Neither can be added in the field.

LBM (Latchbolt Monitor): Reports whether the latchbolt has physically engaged the strike keeper. Confirms the door is actually latched, not just that the strike is energized.

LBSM (Latchbolt Strike Monitor): Reports both latchbolt position and strike lip position simultaneously. Provides four-state complete door status: closed and latched with strike locked, closed and latched with strike released, door open, and door ajar with latch not engaged.

Power Supply Sizing for Multiple HES 9400 Strikes

At 24VDC: each HES 9400 draws 0.25A. One 1-amp supply powers four strikes simultaneously. At 12VDC: each draws 0.45A. One 1-amp supply powers two strikes.

Formula: Number of strikes x amp draw per strike x 1.2 (20% safety margin) = minimum power supply amperage required.

Undersized power supplies cause intermittent release failures consistently misdiagnosed as panel or wiring problems during commissioning.

Compatible Exit Devices for the HES 9400

The HES 9400 accepts a 1/2-inch Pullman latch only. Compatible devices:

• Von Duprin 98 and 99 Series (Pullman latch)

• Sargent 8800 Series

• Corbin Russwin ED5200 Series

• Falcon rim devices with Pullman latch

For 3/4-inch latchbolts, specify HES 9500 Series instead. Confirm the latchbolt projection before ordering.

For the complete exit hardware range compatible with the HES 9400, both ship from the same American Locksets order.

Why American Locksets for HES 9400 Projects

Three issues consistently cause HES 9400 commissioning failures: Terminal D not wired to the door position switch, fail mode set opposite to the door's code requirement, and voltage mismatch between panel output and strike setting. American Locksets confirms all three before the order ships from authorized ASSA ABLOY distribution.

For projects where the HES 9400 installs alongside electronic hardware including power supplies and REX sensors, or alongside commercial locks on other doors, all components ship on one authorized dealer order. Call 877-471-4870 to confirm panel voltage, fail mode, and monitoring options.

Conclusion

The HES 9400 is a 5/8-inch slim-line surface-mounted electric strike for rim exit devices with 1/2-inch Pullman latch: 1,500 lbs static, 70 ft-lbs dynamic, 500,000 cycles, UL 1034 outdoor rated, exceeds ANSI A156.31 Grade 1. Fail safe and fail secure field selectable. 12 or 24VDC field selectable. Terminal D must be wired to the door position switch for the 2-second post-close relay drop. LBM and LBSM monitoring must be factory-specified. SecuriCare 5-year no-fault warranty. Call 877-471-4870 or visit the electric strikes section.

Frequently Asked Questions

What is the HES 9400 electric strike used for? 

A surface-mounted electric strike for rim exit devices with a 1/2-inch Pullman latch. Releases doors electrically without frame cutting or modification.

What is the static strength of the HES 9400?

 1,500 lbs static and 70 ft-lbs dynamic, exceeding ANSI/BHMA A156.31 Grade 1 requirements on both metrics.

Is the HES 9400 fail safe or fail secure?

 Field selectable during installation. Egress paths require fail safe. Restricted areas require fail secure.

Why does the HES 9400 relay drop 2 seconds after door close? 

Eliminates unauthorized re-entry window after close. Requires Terminal D wired to the door position switch.

What monitoring options does the HES 9400 offer?

 LBM monitors latchbolt position. LBSM monitors both latchbolt and strike lip. Both factory-installed, specified at order time.

Where can I buy the HES 9400? 

American Locksets stocks it at americanlocksets.com/electric-strikes. Call 877-471-4870.

Published by the American Locksets Hardware Team. Authorized ASSA ABLOY Dealer, Est. 2001, Monroe, NY.