MS339 - Barcode Reader Unitech - Free user manual and instructions
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| Product Type | 2D Imager Barcode Scanner |
| Brand | Unitech |
| Model | MS339 |
| Dimensions (H x W x D) | 150 x 70 x 100 mm (approx.) |
| Weight | 150 g (approx.) |
| Power Supply | Rechargeable lithium-ion battery; 5V DC via USB |
| Battery Life | Up to 10 hours of continuous scanning |
| Scan Capability | 1D and 2D barcodes, including QR and Data Matrix |
| Interface | USB HID, USB COM, Bluetooth (optional variant) |
| Light Source | White LED illumination; laser aiming (Class 1) |
| Protection Rating | IP54 |
| Drop Resistance | 1.5 m to concrete |
| Operating Temperature | 0°C to 50°C |
| Storage Temperature | -20°C to 60°C |
| Maintenance | Clean the scan window with a soft, lint-free cloth; avoid solvents |
| Safety | Class 1 laser product; do not stare into the beam |
| Spare Parts | Replacement battery, USB cable, charging cradle (optional) |
| Reparability | Battery and cable user-replaceable; internal components serviceable by authorized technicians |
| In the Box | Scanner, USB cable, quick start guide |
Frequently Asked Questions - MS339 Unitech
How do I charge the Unitech MS339?
Connect the scanner to a USB power source (computer or USB charger) using the provided USB cable. The battery indicator will show charging status. A full charge takes approximately 2-3 hours.
Can the MS339 scan barcodes from a mobile screen?
Yes, the MS339 is a 2D imager that can scan barcodes from electronic displays, including smartphones and tablets, as long as the screen is clean and the barcode is in focus.
How do I reset the scanner to factory settings?
Refer to the user manual for the specific command barcode. Typically, you scan a ‘Reset to Factory Defaults’ barcode from the manual. If the manual is lost, contact Unitech support.
What types of barcodes does the MS339 support?
It supports major 1D symbologies (UPC, EAN, Code 39, Code 128, etc.) and 2D symbologies (QR Code, Data Matrix, PDF417, etc.).
How do I clean the scan window?
Use a soft, lint-free cloth slightly dampened with water or a mild glass cleaner. Avoid abrasive materials or solvents that could scratch the window.
Is the Unitech MS339 Bluetooth or wired only?
The standard model is wired (USB). There may be a Bluetooth variant; check the model number suffix. If yours has no antenna, it is wired.
Why is my scanner not reading barcodes?
Ensure the barcode is not damaged or distorted. Check that the scanner is properly connected and powered. Clean the scan window and try again. If it still fails, test with a known good barcode.
Can I use the MS339 without installing software?
Yes, the scanner emulates a keyboard, so it can output scanned data directly into any text field without special drivers. However, configuration may require software.
What is the warranty on the MS339?
Unitech typically offers a 1-year limited warranty against defects in materials and workmanship. Contact your reseller or Unitech for details.
How do I change the output format or add suffixes?
Use the programming barcodes in the user manual to set carriage return, tab, or other suffixes. You can also configure barcode ID prefixes.
User questions about MS339 Unitech
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USER MANUAL MS339 Unitech
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Product information
Brand : Unitech
Model : MS339
Category : Barcode Reader