MT412(i) Barcode Slot Reader

Best Partner for Access Control Applications

MT412 is a durable and reliable barcode slot reader that can be easily integrated into host system via USB or RS232 interface. MT412 is the best partner for access control applications such as ID check-in/check-out and time & attendance system (TNA). Both red LED version (MT412) and infrared LED version (MT412i) are available for reading ordinary barcodes and invisible barcodes.

slot card reader

Easy and Flexible Operation

Built with a large reading slot, MT412 can accept cards of various sizes. MT412 also 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 reader

Reliable and Affordable Solution

Housed in a rugged and reliable enclosure, MT412 can withstand 1.6 meter drops to concrete and is easy to wipe down and clean as well. Built with superior optics, MT412 can read 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 reader

Higher Security

The infrared LED version (MT412i) 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).

slot card scanner

Easy Installation and Configuration

As a plug-and-play USB device, MT412 emulates an USB keyboard and requires no drivers for installation. Simply plug MT412 into the USB port of host computer and start swiping. MT412 is also easily configured on the host computer by Marson's free user-friendly software tool, Ez Utility®.


Optical & Performance
Light Source 660nm visible red LED (MT412)
850nm infrared LED (MT412i)
Sensor Photo Diode
Scan Rate 47 to 470mm / sec
Resolution 5Mil/ 0.127mm
Print Contrast 60%
D.O.F (@ 800 Lux)
  • Code39
  • 5 Mil: 0mm (Contact)
  • 6 Mil: 0mm (Contact)
  • 13 Mil: 0mm (Contact)
Physical Characteristics
Dimension L124 x W61 x H33 mm
Weight 190g
Color Black
Material ABS
Cable 0.65M (Fixed cable)
Indicator Buzzer, LED
Operation Voltage 5 VDC  ±  5%
Working Current < 120mA (MT412)
< 110mA (MT412i)
Standby Current < 700mA (MT412)
< 600mA (MT412i)
Interface/ Profile
  • RS232
User Environment
Operating Temperature 0 ~ 50˚C
Storage Temperature -20 ~ 60˚C
Humidity 0% ~ 95%RH (Non-condensing)
Drop Durability 1.6M
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
    MT412 Slot Reader Datasheet
  • Document
    Ez Utility v6.01
    For Standard Firmware
  • Document
    Universal User Manual v2014.2
  • Document
    SM3 VCP Driver
    For Products with SM3-x-x.xx Firmware