MT420 Barcode Slot Reader Module

Easy Integration for Slot Reader Applications

MT420 is a durable and reliable barcode slot reader module that can be easily integrated into host system via UART / RS232/ USB interface. Both red LED version (MT420) and infrared LED version (MT420i) are available for reading ordinary barcodes and invisible barcodes. MT420 barcode slot reader module improves the ease of use of host system with its flexible swiping speed and capability of decoding all 1D barcode in the market.

barcode slot reader

Bi-directional and Flexible Operation

MT420 barcode slot reader module supports flexible swiping speed from 47 to 470 mm per second with bi-direction therefore either at lower speed or higher speed, forward or backward, barcodes can still be captured easily and successfully.

barcode slot card module

Reliable and Affordable Solution

Built with superior optics and built-in decoder, MT420 barcode slot reader module can decode all major 1D barcodes in the market and have the economical price point that make it a reliable and affordable solution of barcode slot reader.

barcode slot reader module

Higher Security

The infrared LED version (MT420i) barcode slot reader module is available for reading invisible barcodes which is printed under an opaque security film. This feature provides higher security for access control applications such as ID check-in/check-out and time & attendance system (TNA).


Optical & Performance
Light Source 660nm visible red LED (MT420)
850nm infrared LED (MT420i)
Sensor Photo Diode
Resolution 5Mil/ 0.127mm
Print Contrast 60%
D.O.F (@ 800 Lux)
  • Code39
  • 5 Mil: Readable
  • 6 Mil: Readable
  • EAN
  • 15.6 Mil: Readable
Physical Characteristics
Dimension L90 x W22.5 x H24.5 mm
Weight 35g
Color Black
Material ABS
Cable 7-pin connector (UART/ RS232)
5-pin connector (USB)
(pitch 1.25mm))
Operation Voltage 5 VDC  ±  5%
Working Current < 45mA
Surge Current < 700mA
Interface/ Profile UART (MT420)
RS232 (MT422)
USB (MT425)
User Environment
Operating Temperature 0 ~ 50˚C
Storage Temperature -20 ~ 60˚C
Humidity 0% ~ 95%RH (Non-condensing)
Drop Durability 1.6M
Decode Capability
1D Symbologies UPC-A/UPC-E, EAN-8/EAN-13, Industrial 2 of 5, Codabar, Matrix 2 of 5, Code 11, Code 93, Code 32, Code 128, Standard Code 39, Full ASCII Code 39, Interleaved 2 of 5, China Postal Code, MSI Plessy Code, UK Plessy Code, EAN/UCC 128, Telepen Code, IATA Code
ESD Functional after 4KV contact, 8KV Air discharge
EMC FCC Part 15B Class B
CE EN55022/24/32
Environmental WEEE, RoHS 2.0
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* All Specifications are subject to change without notice.


  • Document
  • Document
    Ez Utility v7.03
    For Standard Firmware
  • Document
    Pen/Slot Reader User Manual v2019.1
  • Document
    MT420 Slot Reader Datasheet