MT840 2D Mini Scanner

Simple, Portable, Lightweight

With built-in Bluetooth® 5.0 technology, MT840 2D mini barcode scanner can send data to the host up to 20 meters away. This pocket-sized lightweight wireless 2D barcode scanner is a dexterous mini companion for mobile POS which works on laptops, tablets, smart phones or other mobile devices with iOS®, Android® and Windows®.

wireless barcode scanner

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Increasing Mobile Productivity

MT840 is designed to enable users to quickly capture any 1D and 2D barcodes data in either printed or on-screen (LCD) format. Built with power saving technology, MT840 wireless barcode scanner can help user operate around the clock with less downtime ensuring mobile productivity during the entire busy shift for more than 6000 scans.

mini barcode scanner Key Ring

High Performance Scanning

Built with a Marson high-performance mini scan engine, MT840 has optimal scanning efficiency and accuracy with scanning width of 14cm and reading distance from 5.5cm to 28.5cm on commodity barcodes and ensuring barcode can be easily read within 1/10 of a second.

Scanning Barcode Anytime, Anywhere

At the size of a chewing gum pack and with the weight of only 26.7g, MT840 can be easily carried around in a pocket or on a lanyard. Besides, MT840 2D wireless barcode scanner is also built with state-of-the-art optic design and outstanding algorithm to immunize ambient light impact and extend working range from indoor to outdoor and even under direct sunlight.


The Better User Experience

As classified by Photo-biological Safety Standard EN/IEC 62471, the light source of MT840 is completely safe for human eyes even after long hours operation. With built-in buzzer and LED, MT840 wireless barcode scanner provides full variety of Good Read responses including audible and visual feedback. MT840 can also be easily configured on the host computer by Marson's free user-friendly software tool, Ez Utility®.

portable barcode scanner

Flexible Operations of Data Collection

With built-in Bluetooth 5.0 technology, MT840 can be paired with laptops, tablets, smart phones and other mobile devices with iOS®, Android® and Windows® OS. MT840 2D wireless barcode scanner is also equipped with 2MB flash memory that can store up to 20,000 EAN-13 barcodes offline.
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Optical & Performance
Light Source White LED
Visible red LED
Sensor 640 x 480
Resolution 5mil / 0.125mm (1D)
10mil / 0.25mm (2D)
Scan Angle Horizontal 37°
Vertical 27.5°
Pitch Angle ±60°
Skew Angle ±60°
Roll Angle 360°
Print Contrast Ratio 25%
Width of Field 141mm (13Mil Code39)
Memory 2MB (20,000 barcodes)
Typical D.O.F*
(@ 800 Lux)
  • 5 Mil Code39: 50 ~ 118mm
  • 15 Mil Code128: 50 ~ 418mm
  • 13 Mil UPC/EAN: 50 ~ 317mm
  • 15 Mil QR Code: 29 ~ 222mm
  • 10 Mil Data Matrix: 36 ~ 109mm
Physical Characteristics
Dimension W25.6 x L65.6 x H18.2 mm
Weight 26.7g
Color Black
Material PC
Cable Mini(M) to USB A(M) Cable, 1.5M
Trigger Scan Button
Indicator LED, Buzzer
Operation Voltage 3.7 VDC ± 5%
Working Current < 210mA
Standby Current < 25mA
Battery 3.7V, 350mAh, Li-Polymer Battery
Number of Scan
(per full charge)
6,000 scans
(1 scan/ 5 secs, Bluetooth connected)
Radio Bluetooth® 5.0
Range (Distance) 66 ft./ 20M (line of sight)
Interface/ Profile
  • BT HID
  • BT SPP
  • Memory
User Environment
Operating Temperature -10 ~ 50˚C
Storage Temperature -20 ~ 60˚C
Humidity 0% ~ 95%RH (Non-condensing)
Drop Durability 1.5M
Ambient Light 70,000 Lux (Sunlight)
Decode Capability
Symbologies 1D Symbologies:
UPC-A/ UPC-E0/ UPC-E1, EAN-8/ EAN-13, Code128
Code39, Code93, Codabar, Interleaved 2 of 5, Industrial 2 of 5, Matrix 2 of 5, Standard 2 of 5, China Post 25, Code11, MSI Plessey, Plessey, GS1 Databar, GS1 Databar Limited, GS1 Databar Expanded
2D Symbologies:
QR Code, Micro QR Code, PDF417, MicroPDF417, Data Matrix, Aztec, MaxiCode, Han Xin, Code16K
ESD Functional after 4KV contact, 8KV air discharge
Safety Approval EN/IEC62471 (Exempt Group)
Environmental WEEE, RoHS 2.0
Out Of Box
Cable Mini(M) to USB A(M) Cable, 1.5M, Black
(P/N: 7005-9296A50, QTY: 1)
Hand Strap Hand Strap, 0.24M, Black
(P/N: 8001-1001X00, QTY: 1)
Retractable Short Strap, Black
(P/N: 8009-0021000, QTY: 1)
Retractable Carabiner Badge Holder Reels, Black
(P/N: 8009-00ZZ000, QTY: 1)
Taiwan M 395218
China ZL 201020287072.6
United States US 8,220,712 B2
“ Need a custom product ? Please tell us your requirements. ”
* Those D.O.F are mean values.
** All Specifications are subject to change without notice.


  • Document
  • Document
    MT840 User's Manual v1.7
  • Document
    Ez Utility v7.05
    Windows Scanner Configuration
  • Document
    ScanLink app
    For Android quick pairing
  • Document
    HM3 VCP Driver
    For HM3-x-x.xx Firmware
  • Document
    MT840 Datasheet
    2D Wireless Scanner
  • Document
    MT840 Quick Guide v1