Dormakaba Simplex 6204 - 2-3/4" Series Mechanical Pushbutton Lock – 6202 & 6204

SKU: 6204-60-41
$ 221.45

The dormakaba Simplex 6200 Series is an economical, fully mechanical pushbutton lock providing combination-controlled exterior entry and free egress through an interior knob. It requires no batteries, wiring, keys, cards or software. Available as the 6202 with a 2-3/8" backset or the 6204 with a 2-3/4" backset, the lock features weather-resistant construction and a 3-hour UL/ULC fire-rated cylindrical latch.

Full Product Description

The dormakaba Simplex 6200 Series Mechanical Pushbutton Lock provides reliable keyless access without batteries, electrical wiring, software or electronic credentials. Authorized users enter the programmed combination and rotate the clutch-protected exterior thumbturn to retract the cylindrical latch. From the interior, the fixed knob always provides free egress.

The 6200 Series is available in two primary configurations:

  • Simplex 6202: 2-3/8" backset
  • Simplex 6204: 2-3/4" backset

Both configurations include a 1/2" throw cylindrical latch with a floating faceplate. Selecting the correct model is essential because the backset is determined by the existing door preparation.

The Simplex 6200 stores one shared mechanical access combination. The code can be changed through the keypad without removing the lock from the door. Because the lock is entirely mechanical, there are no batteries to monitor, power supplies to install or network connections to maintain.

Heavy-duty construction includes an all-metal cast exterior housing, vandal-resistant solid-metal pushbuttons, a force-resistant clutch-protected exterior thumbturn, unified interior trim and a fixed interior knob. The exterior thumbturn’s clutch helps resist forced rotation and abuse.

The lock installs on properly prepared wood or metal doors from 1-3/8" through 2-1/4" thick. It uses an ANSI/ASA 161 cylindrical-lock preparation with two additional through holes. If an existing auxiliary lock interferes with installation, the 6200 can be inverted when the opening and application permit.

The cylindrical latch carries a 3-hour UL/ULC fire rating for “A”-labeled doors, and the lock is weather resistant for indoor or appropriate outdoor applications. The 6200 is factory configured for left-hand doors but can be reversed in the field. Manufacturer specifications

Key Features

  • Fully mechanical pushbutton combination lock
  • No batteries, electricity or wiring required
  • No keys, cards, fobs or software required
  • Exterior access by one shared combination
  • Interior knob provides free egress
  • Combination can be changed without removing the lock
  • Force-resistant, clutch-protected exterior thumbturn
  • Vandal-resistant solid-metal pushbuttons
  • Heavy-duty all-metal cast exterior housing
  • Unified interior trim with fixed knob
  • Field-reversible handing
  • Installs on wood or metal doors
  • Weather-resistant construction
  • 1/2" throw UL-listed cylindrical latch
  • 3-hour UL/ULC fire rating for “A”-labeled doors
  • Four durable powder-coated finish options
  • 1-year manufacturer’s warranty

Simplex 6200 Function

Combination Entry with Free Interior Egress

  • Exterior: Enter the correct combination and rotate the thumbturn to retract the latch.
  • Interior: Turn the knob for unrestricted egress.
  • Number of codes: One shared combination
  • Key override: No
  • Passage mode: No
  • Privacy or lockout mode: No
  • Power required: None

The lock automatically returns to secured combination operation after use. It does not have a keyed cylinder or exterior override function.

6202 vs. 6204

Model Backset Latch Throw Primary Difference
6202 2-3/8" 1/2" Residential-style backset
6204 2-3/4" 1/2" Standard commercial backset

Measure the door’s backset before ordering. Backset is measured from the door edge to the centerline of the lock preparation.

Technical Specifications

Specification Details
Manufacturer dormakaba
Brand Simplex
Series 6200
Models 6202 and 6204
Lock type Mechanical pushbutton cylindrical lock
Function Combination entry with free interior egress
Exterior operation Pushbutton combination and thumbturn
Interior operation Fixed knob
Number of codes One
Power requirement None
Key override No
Passage feature No
Privacy or lockout No
Door type Wood or metal
Door preparation ANSI/ASA 161 with two additional through holes
Door thickness 1-3/8" to 2-1/4"
6202 backset 2-3/8"
6204 backset 2-3/4"
Latch throw 1/2"
Latch faceplate Floating faceplate
Minimum recommended stile 5"
Strike Standard strike plate
Handing Factory left; field reversible
Fire rating 3-hour UL/ULC for “A”-labeled doors
Environmental suitability Weather resistant
Warranty 1 year

Exterior and Interior Operation

Exterior Side

The exterior includes:

  • Five-button mechanical keypad
  • Force-resistant clutch-protected thumbturn
  • Cast metal housing
  • Powder-coated finish

The correct combination must be entered before the thumbturn can retract the latch.

Interior Side

The interior includes:

  • Fixed operating knob
  • Unified trim plate
  • Free egress at all times

No combination is required to exit.

Available Finishes

Finish Code Exterior Finish Interior Trim
060 Gold Tone Plated bright brass
067 Almond Plated bright brass
085 Black Plated satin chrome
086 Gray Plated satin chrome

The exterior housing uses a hard, durable powder-coated finish.

Handing Information

The Simplex 6200 is factory configured for a left-hand door but can be reversed in the field.

Confirm the door swing during installation and follow the manufacturer’s instructions for handing changes.

Door Preparation

The 6200 Series requires:

  • ANSI/ASA 161 cylindrical-lock preparation
  • Two additional through holes
  • 5" minimum recommended door stile
  • Door thickness between 1-3/8" and 2-1/4"
  • Correct 2-3/8" or 2-3/4" backset

The lock may be inverted when an existing auxiliary lock obstructs the normal installation position, provided the installation remains compatible with the door and applicable codes.

What Is Included?

Standard package contents generally include:

  • Exterior mechanical keypad and thumbturn assembly
  • Interior knob and trim
  • 1/2" throw cylindrical latch
  • Standard strike
  • Required lock installation hardware
  • Combination-change tool
  • Full-size installation template
  • Installation instructions

Confirm package contents for the exact configured SKU.

Common Applications

The Simplex 6200 Series is commonly used for:

  • Employee-only rooms
  • Storerooms
  • Supply closets
  • Utility rooms
  • Maintenance areas
  • Commercial offices
  • Apartment common areas
  • Schools
  • Healthcare support spaces
  • Warehouses
  • Light commercial entrances
  • Interior or exterior controlled openings

Why Choose the Simplex 6200?

The 6200 Series is a practical choice when an opening requires straightforward mechanical combination access at an economical price.

Choose the 6200 when you need:

  • Battery-free keyless entry
  • One shared access combination
  • Free interior egress
  • A compact exterior thumbturn
  • A cylindrical latch
  • Field-reversible handing
  • Indoor or outdoor installation
  • No mechanical key override
  • No electronic access-control infrastructure

Simplex 6200 vs. 1000 Series

Feature Simplex 6200 Simplex 1000
Exterior operator Thumbturn Knob
Interior operator Knob Knob
Key-override options No Select models
Passage options No Select models
Available backsets 2-3/8" or 2-3/4" 2-3/8" or 2-3/4"
Field reversible Yes Yes
Fire-rated latch Yes Yes
Finish style Powder-coated housing Architectural plated finishes
Warranty 1 year 3 years

Important Ordering Information

Before ordering, confirm:

  1. Required backset
  2. Door thickness
  3. Door handing
  4. Door and frame preparation
  5. Minimum stile width
  6. Finish
  7. Fire-door requirements
  8. Whether knob operation is acceptable
  9. Whether key override or passage is required

Choose the 6202 for a 2-3/8" backset and the 6204 for a 2-3/4" backset.

The 6200 does not provide key override, passage mode, privacy lockout, multiple user codes or audit history.

Frequently Asked Questions

Does the Simplex 6200 require batteries?

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

What is the difference between the 6202 and 6204?

The 6202 has a 2-3/8" backset. The 6204 has a 2-3/4" backset.

How is the door opened from the exterior?

Enter the correct combination and rotate the exterior thumbturn to retract the latch.

Is a combination required to exit?

No. The interior knob always provides free egress.

Does the 6200 have a key override?

No. The Simplex 6200 does not include a mechanical override cylinder.

Does it have passage mode?

No. The exterior remains combination controlled.

How many access codes does it hold?

The lock stores one shared mechanical combination. It does not support separate codes for individual users.

Can the combination be changed?

Yes. It can be changed through the keypad without removing the lock from the door.

What is the exterior clutch?

The clutch helps protect the lock against damage caused by forced rotation of the exterior thumbturn.

Is the Simplex 6200 field reversible?

Yes. It is factory configured for left-hand doors but can be reversed in the field.

Is it ADA compliant?

The 6200 uses an exterior thumbturn and interior knob and is not identified as an ADA-compliant lever lock. Consider an appropriate lever-operated model when accessibility is required.

Can it be used outdoors?

The manufacturer identifies the 6200 Series as weather resistant for appropriate exterior applications.

Is it fire rated?

The 1/2" cylindrical latch carries a 3-hour UL/ULC fire rating when properly installed as part of a compatible “A”-labeled fire-door assembly.

Can the lock be installed upside down?

The manufacturer states that it can be inverted when an existing auxiliary lock obstructs normal installation. Confirm that the resulting installation is appropriate for the opening.