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Barcode Card Reader (1D)

The MS146 bar code slot reader is a flexible, cost effective scanning solution. With a resolution of up to 6 mils, the MS146 is capable of reading any bar coded identification badge.

Its sealed optical system is available in both visible light or infrared. The infrared units ensure accurate reading of visible and laminated badges. Its water resistant base, rugged housing, and IP54 rated sealing make the MS146 ideal for harsh environments. An optional mounting bracket is available to safely secure the unit in any direction.


• Wide barcode slot with flexible reading angle and higher resolution
• Multi-direction for flexibility of installation
• User configurable via PC programming
• Desktop or wall mountable
• Advanced data editing
• Warranty: 2 years

Model Comparison


Barcode Scanning      
Scans 1D Barcodes  
Scans 2D Barcodes      
Scans Infrared Barcodes No Yes  
Light Source 660nm LED 930nm LED  
Interface Options      
Keyboard Wedge (PS/2)  
Serial (RS232)  
Laser Emulation    
Drop Threshold 5 Feet 5 Feet  
Environmental Seal Yes Yes  
Warranty 2 Years 2 Years  


The Unitech customer support team is available to answer your questions Monday through Friday from 8am to 5pm Pacific Time.



8am-5pm Pacific

  • Model Numbers

  • MS146-4G MS146, USB
    MS146-4UMG MS146, USB, Mounting Bracket
    MS146-2G MS146, RS232 - (Power Adapter Sold Separately)
    MS146-3PS2G MS146, Keyboard Wedge (PS/2)
    MS146I-4G MS146, Infrared, USB
    MS146I-4UMG MS146, Infrared, USB, Mounting Bracket
    MS146I-2G MS146, Infrared, RS232 - (Power Adapter Sold Separately)
    MS146I-2RMG MS146, Infrared, RS232, Mounting Bracket - (Power Adapter Sold Separately)
    MS146I-3PS2G MS146, Infrared, Keyboard Wedge (PS/2)
    MS146IAG MS146, Infrared, Laser Emulation (9-Pin Squeeze)
  • Optical & Performance

  • Light Source Visible light: 660nm LED
    To read a barcode symbol, it is illuminated by a scanner. Light is reflected back in varying amounts, depending on the bars and spaces. These differences are translated into signals by a light detector inside the scanner. The signals are converted into various combinations to stand for specific characters.

    Infrared: 930nm LED
    In the case of infrared barcodes, a layer of security is added to an otherwise low-security technology. Special black obscuration panels cover the barcode label to prevent photocopying, making it readable only by an infrared barcode reader.

    Sensor Photo diode
    Depth of Field .07 inch
    Resolution 6mils minimum
    Print Contrast 0.6 minimum
    Scan Speed 2.0" - 30" per second
    M.T.B.F. 168,789 Hours
  • Symbologies

  • Types Code 39 standard and full ASCII, EAN-13, UPC-A, EAN-8, UPC-E, Standard 2 of 5, Code 128, Code 93, MSI, Code 11, Code 32, Delta Code, Label Code, Plessey Code, Codabar
  • Communication

  • Types USB, Keyboard Wedge, RS232, TTL (undecoded)
  • Enclosure

  • Dimension 3.75”H x 1.375”W x 1.875”D
    Weight 6.7 ounces
    Drop Test 5-foot drop threshold
  • Power Source

  • Power Consumption 35mA for TTL 5V DC 5%
    Beep Volume >70dB
    RS232 Model Power supplied through pin #9
  • Environmental

  • Operation Temperature 32 to 122ºF
    Storage Temperature 4 to 140ºF
    Humidity 0 ~ 95% RH non-condensing
  • Warranty

  • Main Unit 2 years
    Cables, Adapters 90 days
  • MS146 110V Adapter

  • PN# 101000-0150

  • MS146 220V Adapter

  • PN# 1010-601873G

  • MS146 Power Stealer

  • PN# 1550-201436

  • MS146 Adapter Cable RS232 / USB

  • PN# PW201-2

  • MS146 Adapter Cable
    PS/2 / USB

  • PN# USB-PS2

  • MS146 Mounting Bracket

  • PN# 5200-381680


  • File Description View
    MS146 Introduction Video
  • Product Documentation

  • File Description Download
    MS146 Brochure
    MS146 User Guide
    MS146 Barcode Printing Guide
    Guideline for printing barcodes on a card
    Scanner Configuration Guide

  • Supporting Software

  • File Description Download
    Com to Keyboard
    Software utility for converting RS232 scanner input into keyboard input.

    Scanner Configuration Manager
    Software utility for scanner configuration.

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