Dormakaba Simplex 7104 Mechanical Pushbutton Deadlocking Latch Automatic Lock – Adjustable Backset

The dormakaba Simplex 7104 is a fully mechanical pushbutton lock with a 1/2" deadlocking latch and an adjustable 2-3/8" to 2-3/4" backset. Enter the programmed combination and rotate the exterior thumbturn to retract the latch. The lock automatically relocks each time the door closes, while the interior thumbturn provides unrestricted egress. No batteries, wiring, keys, cards or software are required.

Full Product Description

The dormakaba Simplex 7104 Mechanical Pushbutton Lock provides battery-free combination access with an automatically relocking deadlocking latch. Authorized users enter the programmed combination and rotate the exterior thumbturn to retract the latch. When the door closes, the spring-loaded latch automatically engages the strike and returns the opening to secured operation.

Unlike the Simplex 7102 and 7108 deadbolt models, the 7104 does not have to be manually relocked after each use. Its automatic relocking function makes it a better choice for employee entrances, utility rooms, storerooms and other controlled openings that should remain secured without requiring someone to extend a deadbolt manually.

The 7104 features a 1/2" throw deadlocking latch with an adjustable 2-3/8" to 2-3/4" backset. This adjustable latch accommodates the two most common backset measurements without requiring separate 7102- and 7108-style deadbolt models.

From the interior, the thumbturn retracts the latch without requiring the combination, providing unrestricted egress. Once the interior thumbturn is released and the door closes, the latch automatically returns to the secured position.

Because the Simplex 7104 is completely mechanical, it requires no batteries, electricity, wiring, access cards, software, computer or network connection. It continues operating during power and network outages while eliminating recurring battery-replacement and electronic maintenance expenses.

The lock stores one shared mechanical access combination. The combination can use one or more of the five pushbuttons pressed individually or simultaneously, providing thousands of possible combinations. Authorized personnel can change the combination from the interior without removing the complete lock from the door.

Heavy-duty construction includes an all-metal cast exterior housing, vandal-resistant solid-metal pushbuttons and a force-resistant, clutch-protected exterior thumbturn. The clutch helps protect the lock’s internal mechanism if someone attempts to force the exterior thumbturn without entering the correct combination.

The Simplex 7104 installs on wood or metal doors from 1-3/8" through 2-1/4" thick, requires a minimum 4" stile and is field reversible for left- or right-hand doors. Its weather-resistant construction makes it suitable for appropriate indoor or outdoor applications. Manufacturer specifications

Key Features

• Fully mechanical pushbutton lock
• 1/2" throw deadlocking latch
• Adjustable 2-3/8" to 2-3/4" backset
• Automatically relocks when the door closes
• Combination-controlled exterior access
• Interior thumbturn provides unrestricted egress
• No batteries, electricity or wiring required
• No keys, cards, fobs or software required
• One shared access combination
• Thousands of possible combinations
• Combination can be changed without removing the lock
• Force-resistant, clutch-protected exterior thumbturn
• Vandal-resistant solid-metal pushbuttons
• Heavy-duty all-metal cast housing
• Curved-lip strike
• Field-reversible handing
• Installs on wood or metal doors
• Weather-resistant construction
• Can be used as a primary or auxiliary lock
• 1-year manufacturer’s warranty

Simplex 7104 Function

Combination Entry with Automatic Relocking

Exterior Operation

1. Enter the correct pushbutton combination.
2. Rotate the exterior thumbturn.
3. The 1/2" deadlocking latch retracts.
4. Open the door.
5. The latch automatically relocks when the door closes.

Interior Operation

• Rotate the interior thumbturn to retract the latch.
• No combination is required to exit.
• Release the thumbturn and allow the door to close.
• The latch automatically engages the strike.

Function Summary

• Exterior combination required: Yes
• Interior combination required: No
• Interior free operation: Yes
• Automatic relocking: Yes
• Manual deadbolt relocking: No
• Key override: No
• Latch holdback: No
• Number of codes: One
• Power required: None

Automatic Relocking

The Simplex 7104 automatically returns the opening to secured operation each time the door closes.

This is the major functional difference between the 7104 and the 7102/7108 deadbolt models:

• The 7104 uses a spring-loaded latch.
• The latch retracts when the correct combination is entered.
• The latch projects again when the operating thumbturn is released.
• Closing the door causes the latch to engage the strike automatically.
• No one has to manually extend a deadbolt.

The 7104 does not include latch holdback. Choose the Simplex 7106 if a surface-mounted rim latch with holdback is required.

Deadlocking Latch Protection

The 7104 uses a deadlocking latch rather than an ordinary spring latch. When the door is properly closed and the auxiliary deadlocking feature contacts the strike, the main latch is protected against being forced back with a card or similar object.

Proper strike alignment is essential for the deadlocking feature to function correctly.

Adjustable Backset

The Simplex 7104 latch adjusts between:

• 2-3/8" backset
• 2-3/4" backset

Backset is measured from the edge of the door to the centerline of the lock.

The adjustable latch allows one 7104 model to fit either common preparation. Set the latch to the correct backset before installation.

Simplex 7100 Model Comparison

7104 vs. 7102 and 7108

Choose the 7104 when automatic relocking is more important than the longer throw of a deadbolt.

7104 vs. 7106

Technical Specifications

Door Preparation

The Simplex 7104 requires preparation including:

• Main housing through bore
• Edge bore for the deadlocking latch
• Combination-change access
• Two mounting through holes
• Adjustable 2-3/8" or 2-3/4" backset
• Minimum 4" door stile

Use the manufacturer’s full-size 7104 installation template before drilling or modifying the door.

This lock does not necessarily fit a standard cylindrical lock preparation without additional drilling.

Included Components

The standard Simplex 7104 package generally includes:

• Exterior pushbutton housing
• Clutch-protected exterior thumbturn
• Adjustable 1/2" deadlocking latch
• Interior thumbturn assembly
• Interior combination-change assembly
• Curved-lip strike
• Through bolts and installation screws
• Full-size installation template
• Installation instructions

Confirm package contents for the exact finish and catalog number.

Available Finishes

• 03 / 605: Bright Brass
• 05 / 609: Antique Brass
• 26D / 626: Satin Chrome
• 19 / 676: Black exterior with satin chrome interior trim
• 059 / AC: Antique Copper
• 060 / GV: Gold Vein
• 061 / SV: Silver Vein
• 062 / AW: Antique White

Finish availability should be confirmed for the selected SKU.

Handing Information

The Simplex 7104 is field reversible and can be configured for:

• Left Hand
• Right Hand
• Left Hand Reverse
• Right Hand Reverse

Handing is determined while standing on the exterior or pushbutton side of the closed door.

Combination Operation

The Simplex mechanical combination chamber provides thousands of possible combinations using five pushbuttons.

Buttons may be:

• Pressed individually
• Pressed simultaneously
• Used in a sequence combining individual and simultaneous entries

Each button may be used only once within the combination sequence.

The 7104 stores one shared code and does not provide:

• Individual user codes
• Audit trails
• Time schedules
• Remote access
• Smartphone operation
• Electronic lockdown
• Access-control system integration

Common Applications

The Simplex 7104 is commonly used for:

• Employee entrances
• Offices
• Storerooms
• Supply closets
• Utility rooms
• Apartment common areas
• Schools
• Dormitories
• Warehouses
• Commercial facilities
• Synagogues and religious buildings
• Interior or exterior doors requiring automatic relocking

The 7104 is sometimes marketed or searched as a Simplex Shabbos lock or mechanical Shabbat combination lock. dormakaba describes it as a mechanical pushbutton deadlocking latch and does not provide a halachic certification. Customers should consult their rabbinic authority regarding a specific use.

Why Choose the Simplex 7104?

Choose the 7104 when you need:

• Automatic relocking when the door closes
• A 1/2" deadlocking latch
• An adjustable 2-3/8" or 2-3/4" backset
• Battery-free combination entry
• Free interior thumbturn operation
• No mechanical key override
• Field-reversible handing
• Indoor or outdoor installation
• A primary or auxiliary mechanical lock

Important Ordering Information

Before ordering, confirm:

1. An automatically relocking latch is desired.
2. A 1/2" latch throw is appropriate.
3. Required backset is 2-3/8" or 2-3/4".
4. Door thickness is between 1-3/8" and 2-1/4".
5. Door stile is at least 4" wide.
6. The door edge can accept the mortised latch preparation.
7. Correct finish.
8. Door handing.
9. Curved-lip strike is compatible with the frame.
10. Automatic latching and thumbturn egress comply with applicable codes.

The most common ordering mistake is confusing the 7104 automatic deadlocking latch with the manually relocked 7102 or 7108 deadbolt.

Frequently Asked Questions

Does the Simplex 7104 require batteries?

No. It is completely mechanical and requires no batteries, electricity or wiring.

Does the 7104 automatically relock?

Yes. The deadlocking latch automatically engages when the door closes.

What backset does it use?

The latch is adjustable for either a 2-3/8" or 2-3/4" backset.

How long is the latch throw?

The deadlocking latch has a 1/2" throw.

Is the 7104 a deadbolt?

No. It uses a spring-loaded deadlocking latch. The 7102 and 7108 are the deadbolt models.

Does it have latch holdback?

No. The 7106 rim-latch model includes latch holdback.

Is a combination required to exit?

No. The interior thumbturn provides unrestricted operation.

Does the 7104 have key override?

No. Exterior access is by mechanical combination only.

Can the combination be changed?

Yes. Authorized personnel can change it from the interior without removing the complete lock.

How many access codes does it hold?

The lock stores one shared mechanical combination.

Is the lock field reversible?

Yes. It can be configured for left- or right-hand doors.

Can it be used outdoors?

The manufacturer identifies the 7100 Series as weather resistant for appropriate exterior installations.

Is the Simplex 7104 ADA compliant?

The lock uses exterior and interior thumbturns and is not identified as an ADA-compliant lever product.

Is the Simplex 7104 fire rated?

dormakaba does not list a fire rating for the current 7100 Series. Do not represent the 7104 as fire rated without documentation for the exact assembly.

Is this a “Shabbos lock”?

It is commonly marketed and searched using that term because it is fully mechanical.