Legacy Single-Line 1D Barcode Scanning with CodeGate™ Target Selection.

Honeywell VoyagerCG MS9540 USB Barcode Scanner | The Honeywell VoyagerCG MS9540 is a legacy single-line laser barcode scanner designed for reading standard 1D barcodes in applications such as retail point of sale, document processing, menu scanning and inventory-related data capture.

Originally developed under the Metrologic Voyager family, the MS9540 is distinguished from the related MS9520 by CodeGate™ technology, which allows an operator to aim at a selected barcode and transmit the decoded data by pressing the CodeGate button.

Honeywell now lists the Voyager 9540 as a discontinued product. Product discontinuation is dated 30 June 2024, while service and support discontinuation is listed for 31 December 2027.

For that reason, the MS9540 should be considered primarily for:

• Replacement requirements
• Existing installed fleets
• Legacy POS systems
• Applications that specifically require this model
• Environments where a compatible 1D laser scanner remains sufficient

Overview

The VoyagerCG MS9540 combines automatic barcode detection with operator-controlled data transmission.

Honeywell documents three operating concepts:

• Automatic trigger while installed in the stand
• CodeGate operation when used out of the stand
• Optional manual activation mode

In CodeGate operation, the scanner automatically activates its laser when a barcode enters the detection area. The operator can align the visible scan line with the intended barcode and then press the button to send the data to the connected host system.

Key Features

• Single-line laser barcode scanner
• Designed for standard 1D barcodes
• Honeywell / Metrologic CodeGate™ technology
• Automatic infrared activation
• Handheld operation
• Hands-free operation with compatible stand
• Automatic in-stand detection
• USB interface versions available
• Data editing / parsing capability
• User-programmable Flash ROM
• Compatible configuration through MetroSelect / MetroSet tools
• GS1 DataBar support
• Replaceable interface cable design on documented configurations
• Legacy POS and document-processing applications

Important: 1D Scanner, Not a QR / 2D Scanner

The MS9540 is a single-line laser scanner.

It is intended for conventional 1D barcode formats and should not be advertised as a QR Code, Data Matrix or general-purpose 2D imager.

Honeywell documents the scanner as supporting standard 1D symbologies, including GS1 DataBar.

If your application requires:

• QR Code
• Data Matrix
• PDF417
• Smartphone-screen 2D codes

a modern 2D imaging scanner should generally be considered instead.

CodeGate™ Technology

CodeGate is the feature that distinguishes the MS9540 VoyagerCG from the earlier MS9520 Voyager model.

The workflow is:

Barcode Detected → Laser Activates → Operator Targets Desired Code → CodeGate Button → Data Sent to Host

This can be useful when several barcodes are located close together and the operator wants more control over which barcode is transmitted. Honeywell specifically identifies menu scanning as an appropriate CodeGate application.

Handheld and Hands-Free Operation

The MS9540 can operate:

Out of the stand: as a handheld scanner using CodeGate.

In the stand: as a presentation-style scanner with automatic triggering.

Honeywell states that the scanner automatically detects when it is placed in the stand and changes its operating behaviour accordingly.

This makes the scanner suitable for fixed counter use while still allowing the operator to pick it up when necessary.

Laser Scanning Technology

The Voyager MS9540 uses a visible 650 nm laser diode.

Honeywell documentation lists a single scan-line pattern and automatic infrared triggering.

Laser scanning can be suitable for traditional printed 1D barcodes, but it does not provide the same capabilities as modern area-imaging technology for 2D codes or many screen-based applications.

Barcode Support

Honeywell describes the MS9540 as capable of decoding standard 1D barcode families, including GS1 DataBar.

Depending on scanner configuration, supported 1D formats include commonly used symbologies such as:

• UPC
• EAN
• Code 39
• Code 128
• Codabar
• Interleaved 2 of 5
• GS1 DataBar / RSS

Exact symbology configuration should be confirmed if the intended application uses an unusual barcode format.

USB Connectivity

The Voyager MS9540 was available in several interface configurations.

Honeywell's documentation identifies USB variants including:

• Low-speed USB HID
• Low-speed USB POS
• Full-speed USB

Other historical interfaces were also offered, including RS-232 and keyboard-wedge configurations.

For an existing or replacement MS9540 requirement, it is important to confirm the exact interface suffix or cable configuration rather than assuming every MS9540 is USB.

Technical Specifications

Brand: Honeywell

Legacy Brand / Family: Metrologic VoyagerCG

Model: MS9540 / VoyagerCG 9540

Product Type: Handheld / Presentation 1D Laser Barcode Scanner

Scan Technology: Single-line laser

Laser Wavelength: Approximately 650 nm

CodeGate: Yes

Automatic Trigger: Yes

Hands-Free Operation: Supported with compatible stand

Barcode Capability: Standard 1D symbologies including GS1 DataBar

USB: Available on applicable configurations

Other Historical Interfaces: RS-232, keyboard wedge and other host interfaces depending on exact version

Scan Pattern: Single scan line

Minimum Bar Width: Model documentation lists down to approximately 0.127 mm / 5 mil for standard Voyager configurations

Scan Speed: Historical Voyager literature lists approximately 72 scan lines/sec for standard MS9520/MS9540 configurations

Configuration: MetroSelect programming barcodes / MetroSet software on applicable systems

Product Status: Discontinued

Product Discontinuation: 30 June 2024

Honeywell Service/Support Discontinuation: 31 December 2027

Specifications should be verified against the exact scanner suffix and interface configuration when purchasing a replacement unit.

Retail POS Applications

The MS9540 was commonly used at retail counters for conventional product barcode scanning.

A typical workflow is:

Product Barcode → MS9540 → USB / Host Interface → POS Software

The scanner reads the barcode data.

The POS system performs functions such as:

• Product lookup
• Pricing
• Inventory update
• Transaction processing

The scanner itself does not manage these business functions.

Menu & Document Barcode Scanning

CodeGate can be especially useful where several barcodes appear on the same document, menu sheet or reference page.

The operator can visually align the scan line with the desired barcode before pressing the CodeGate button to transmit it.

Honeywell specifically references:

• Menu scanning
• Point of sale
• Document processing
• Inventory control

as VoyagerCG application areas.

Library & Office Applications

The MS9540 may also remain useful in legacy environments involving conventional 1D barcode identification, such as:

• Library item barcodes
• Document tracking
• Asset identification
• Internal file references
• Office inventory

Compatibility depends on the host software and barcode format.

Data Editing

Honeywell documentation identifies barcode-data parsing/editing capabilities on the Voyager series.

This allows scanner output to be configured for certain host-system requirements, such as modifying the format of transmitted barcode data.

The available formatting functions depend on scanner configuration and programming.

Operating-System Compatibility

I would not advertise the MS9540 as universally compatible with Windows, macOS and Linux.

Because this is a discontinued legacy scanner, actual compatibility depends on:

• USB mode
• Interface version
• Current operating system
• POS software
• Driver requirements
• Legacy application configuration

For a modern replacement project, confirm compatibility before ordering.

Product Discontinuation – Buyer Guidance

Honeywell currently identifies the Voyager 9540 as discontinued.

This does not mean every existing MS9540 immediately stops working.

It means buyers should consider factors such as:

• Replacement-unit availability
• Cable availability
• Long-term support
• Driver compatibility
• Spare scanner requirements
• Whether migration to a current Honeywell scanner is appropriate

For a new installation, a current-generation scanner may often be preferable.

For an established system that specifically requires MS9540, replacement units may still be relevant subject to verified availability.

MS9540 vs MS9520

The key historical difference is CodeGate.

MS9540 VoyagerCG

• Automatic trigger
• CodeGate button
• Handheld + stand operation
• Standard 1D barcode scanning

MS9520 Voyager

• Similar Voyager platform
• No CodeGate feature

Honeywell's documentation explicitly identifies CodeGate as the feature unique to MS9540 within these two models.

When Should You Consider a Newer Scanner?

A newer 2D imager may be more appropriate if your business needs:

• QR Code scanning
• Data Matrix
• Mobile-phone barcode scanning
• Digital coupons
• Electronic tickets
• Modern payment QR workflows
• Longer-term manufacturer support

The MS9540 remains primarily relevant for legacy 1D installations and exact replacement requirements.

Things to Verify Before Ordering

Please confirm:

• Exact model: MS9540
• Interface suffix
• USB requirement
• Existing cable requirement
• Stand requirement
• Required 1D symbologies
• Existing POS system
• Operating-system compatibility
• CodeGate requirement
• Replacement vs new deployment
• Package contents
• Product condition
• Warranty provided by the actual seller/supply channel

Because the product has been discontinued, these checks are particularly important.

Purpose of Use

The Honeywell VoyagerCG MS9540 is intended to read conventional 1D barcodes and transfer decoded information to a compatible host application.

Its CodeGate feature is useful where the operator needs to select a particular barcode before sending it to the host system.

It should not be selected when modern 2D scanning is required.

Why Choose NEOTECH® UAE

NEOTECH® can help customers assess whether an older scanner is still appropriate for their installed system or whether a newer barcode reader should be considered.

We can assist with:

• Exact model identification
• USB / interface requirements
• 1D vs 2D scanner selection
• Legacy replacement considerations
• POS scanner requirements
• Current scanner alternatives
• UAE availability confirmation

Learn First. Decide Second. Buy Only If It Is Right for Your Needs.

There is absolutely no obligation or pressure to proceed with the purchase with us.

UAE Delivery

NEOTECH® supplies within the United Arab Emirates.

Shipping: Free Standard Shipping
Order Cut-Off: 2:00 PM GST
Handling: 1–2 business days
Transit: 3–5 business days
Estimated Total Delivery: 4–7 business days

Because the MS9540 has been discontinued by Honeywell, availability should always be confirmed before ordering.

FAQ - Honeywell MS9540

Q: Is the Honeywell MS9540 still manufactured?
A: No. Honeywell lists the Voyager 9540 as discontinued, with product discontinuation dated 30 June 2024. Honeywell currently lists service/support discontinuation for 31 December 2027.

Q: Can the MS9540 scan QR codes or other 2D barcodes?
A: No. The standard MS9540 VoyagerCG is a single-line laser scanner designed for 1D barcodes. If QR Code or Data Matrix scanning is required, a 2D imaging scanner should be selected.

Q: What does CodeGate do on the MS9540?
A: CodeGate allows the scanner to decode a barcode while the operator aims at it, then transmit the data when the CodeGate button is pressed. This can be useful where several barcodes are positioned close together.

Helpful Internal Links

• Honeywell Barcode Scanners
• 1D Barcode Scanners
• 2D Barcode Scanners & QR Code Readers

Contact NEOTECH® UAE

NEOTECH®
Operated by NEOLYN TECHNOLOGY LLC

Email: support@neotech.ae

Address:
Store 13, Computer Building
Al Fahidi, Bur Dubai
Dubai 44245
United Arab Emirates

Disclaimer – NEOTECH® UAE

Honeywell, Metrologic, Voyager, VoyagerCG and CodeGate are trademarks or product names belonging to their respective rights holders.

The Honeywell Voyager 9540/MS9540 is a discontinued legacy product. Availability, product condition, accessories, interface configuration and seller-provided warranty may vary.

Application examples are provided for identification and compatibility guidance only. The scanner does not provide POS, inventory, document-management or other business software functionality independently.

Customers should verify the exact model, interface, required barcode formats, operating-system compatibility and product condition before ordering.

NEOTECH® is operated by NEOLYN TECHNOLOGY LLC. No manufacturer-authorised reseller or distributor status is claimed unless separately documented.

Last Updated: 14 August 2026  (GST, UTC+4)