Dormakaba Simplex 7108 Mechanical Pushbutton Deadbolt – 2-3/8" Backset

Kaba Simplex 7108 Pushbutton Shabbos Lock. For A Backset of 2-3/8".

For 2-3/4" Backset See Kaba Simplex 7102.

The dormakaba Simplex 7108 is a fully mechanical pushbutton deadbolt with a 1" throw and 2-3/8" backset. Enter the programmed combination and turn the exterior thumbturn to retract the deadbolt; use the interior thumbturn for unrestricted egress and manual relocking. The 7108 requires no batteries, wiring, keys, cards or software and is field reversible for left- or right-hand doors.

Full Product Description

The dormakaba Simplex 7108 Mechanical Pushbutton Deadbolt provides reliable keyless access without batteries, electrical wiring, software or electronic credentials. Authorized users enter the programmed combination and rotate the exterior thumbturn to retract the 1" deadbolt. From the interior, the thumbturn operates freely without requiring a combination.

The Simplex 7108 is the 2-3/8" backset deadbolt model in the Simplex 7100 Series. Its shorter backset makes it suitable for doors prepared around a 2-3/8" latch centerline. It can be used as a primary locking device or as an auxiliary deadbolt installed above another lockset.

Unlike an automatically relocking latch, the 7108 deadbolt remains retracted after authorized entry. The deadbolt must be manually extended to secure the door again. The interior thumbturn provides unrestricted operation for retracting or extending the bolt.

Because the Simplex 7108 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 battery-replacement and electronic maintenance expenses.

The lock stores one shared mechanical access combination. The combination can use one or more of the five buttons pressed individually or simultaneously, providing thousands of possible combinations. Authorized personnel can change the combination from the interior side 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 protective clutch helps prevent internal damage if someone attempts to force the thumbturn without first entering the correct combination.

The 7108 installs on wood or metal doors from 1-3/8" through 2-1/4" thick and requires a minimum 4" door stile. It is field reversible for left-hand, right-hand and reverse-bevel door applications.

The lock is weather resistant for appropriate indoor or outdoor installations and is available in multiple plated and powder-coated finishes. Manufacturer specifications

Key Features

• Fully mechanical pushbutton deadbolt
• 1" deadbolt throw
• 2-3/8" backset
• Combination-controlled exterior access
• Interior thumbturn provides unrestricted operation
• Manual relocking
• 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
• Field reversible
• Installs on wood or metal doors
• Weather-resistant construction
• Can be used as a primary or auxiliary lock
• 1-year manufacturer’s warranty

Simplex 7108 Function

Combination Entry with Manually Relocked Deadbolt

Exterior Operation

1. Enter the correct pushbutton combination.
2. Rotate the exterior thumbturn.
3. The 1" deadbolt retracts.
4. Open the door.

Interior Operation

• Rotate the interior thumbturn to retract the deadbolt and exit.
• Rotate the interior thumbturn to extend the deadbolt and secure the door.

Function Summary

• Exterior combination required: Yes
• Interior combination required: No
• Interior free operation: Yes
• Automatic relocking: No
• Manual relocking: Yes
• Key override: No
• Passage mode: Not applicable
• Latch holdback: Not applicable
• Number of codes: One
• Power required: None

Important Manual-Relocking Operation

The Simplex 7108 does not automatically relock when the door closes.

After the combination is entered and the deadbolt is retracted:

• The bolt remains retracted.
• The opening remains unlocked.
• The interior thumbturn must be used to extend the deadbolt again.

Customers who require automatic relocking should consider the Simplex 7104 deadlocking latch.

7108 vs. 7102

The Simplex 7108 and 7102 provide the same basic mechanical deadbolt operation. The difference is the backset.

Measure from the edge of the door to the centerline of the lock before ordering.

Simplex 7100 Model Comparison

Technical Specifications

Door Preparation

The Simplex 7108 requires door preparation including:

• 1-5/8" main housing bore
• 1" edge bore for the deadbolt
• 3/4" through bore
• Two 1/4" mounting holes
• 2-3/8" backset
• Minimum 4" door stile

Use the manufacturer’s full-size 7102/7108 installation template and select the 2-3/8" backset layout before drilling.

The 7108 does not use the same preparation as a conventional cylindrical lock with a standard 2-1/8" cross bore.

Included Components

The standard Simplex 7108 package generally includes:

• Exterior pushbutton housing
• Clutch-protected exterior thumbturn
• 1" deadbolt assembly with 2-3/8" backset
• Interior thumbturn assembly
• Interior combination-change assembly
• Flat deadbolt strike
• Through bolts and installation screws
• Full-size installation template
• Installation instructions

Confirm package contents for the exact catalog number and finish.

Available Finishes

• 03 / 605: Bright Brass
• 05 / 609: Antique Brass
• 26D / 626: Satin Chrome
• 622: All Black
• 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 7108 is field reversible and can be installed on:

• 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 offers 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 7108 stores one shared combination 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 7108 is commonly used for:

• Synagogues and religious facilities
• Offices
• Storerooms
• Utility rooms
• Employee entrances
• Apartment common areas
• Schools
• Dormitories
• Warehouses
• Commercial facilities
• Residential applications
• Auxiliary security above an existing lock
• Doors requiring a 2-3/8" backset

The 7108 is sometimes referred to as a Simplex Shabbos lock, mechanical Shabbat lock or keyless mechanical deadbolt. dormakaba describes it as a mechanical pushbutton deadbolt and does not provide a halachic certification. Customers should consult their rabbinic authority regarding a particular use.

Why Choose the Simplex 7108?

Choose the 7108 when you need:

• A 2-3/8" backset
• A full 1" deadbolt throw
• Battery-free combination entry
• Manual control over relocking
• Free interior thumbturn operation
• No mechanical key override
• Field-reversible handing
• Indoor or outdoor installation
• A primary or auxiliary mechanical deadbolt

Important Ordering Information

Before ordering, confirm:

1. A 2-3/8" backset is required.
2. Manual relocking is acceptable.
3. A 1" deadbolt is appropriate.
4. Door thickness is between 1-3/8" and 2-1/4".
5. Door stile is at least 4" wide.
6. The door and frame can accept the required preparation.
7. Correct finish.
8. Door handing.
9. Deadbolt operation is permitted by applicable egress codes.
10. The opening does not require automatic latching.

The most common ordering mistakes are confusing the 7108 with the 2-3/4" backset 7102 or expecting the bolt to relock automatically.

Frequently Asked Questions

Does the Simplex 7108 require batteries?

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

What is the 7108 backset?

The Simplex 7108 has a 2-3/8" backset.

How far does the deadbolt extend?

The tubular deadbolt has a 1" throw.

Does it automatically relock?

No. The deadbolt remains retracted after entry and must be manually extended using the interior thumbturn.

What is the difference between the 7108 and 7102?

The 7108 has a 2-3/8" backset. The 7102 has a 2-3/4" backset.

Is a combination required to exit?

No. The interior thumbturn operates freely.

Does the 7108 have a 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 from the door.

How many access codes does it hold?

The lock stores one shared mechanical combination.

Is the 7108 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 7108 ADA compliant?

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

Is the Simplex 7108 fire rated?

dormakaba does not list a fire rating for the 7100 Series on its current product page. Do not represent the 7108 as fire rated without documentation for the exact assembly.

Can it be installed above another lock?

Yes. It can be used as an auxiliary lock when adequate spacing, door preparation and code compliance are maintained.

Is this a “Shabbos lock”?

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