Unitech MS852B+ Bluetooth 2D Barcode Scanner

How to turn on / turn off the scanner

Turn on: Long press the trigger key [?️] for 2 seconds until you hear a long beep sound.

Turn off: Long press the trigger key [?️] for about 7 seconds until you hear a short beep sound.

Charging the Scanner

Before using the scanner for the first time, please charge the scanner with the cradle.

Charging Status:

• Red LED light [?]: Being charged
• LED light goes off [⚪]: Fully charged

Cradle Description: The cradle features a USB port for PC connection, an interface switch [?️] to select between USB and RS232 communication, drain holes, station mount screw holes, and a pairing QR code label.

How to pair the scanner with the cradle

1. Select the desired interface (USB or RS232) using the interface switch [?️] on the cradle and connect the cradle to your PC via the interface cable.

2. Turn on the scanner by long-pressing the trigger key [?️] for 2 seconds.

3. Place the scanner onto the cradle to initiate Bluetooth [?] pairing automatically.

4. Successful pairing is indicated when both the scanner's LED and the cradle's LED show a solid blue light [?].

Scanner type

Note: These settings apply to cradleless mode only, where the scanner connects directly to the host without the cradle.

To change the scanner type, un-pair the device first, select the new scanner type, and then re-establish the Bluetooth [?] connection.

Available Scanner Types:

• BT Keyboard [⭐ Default]
• BLE Keyboard
• BT SPP

Operation Mode

• Auto [⭐ Default]
• Wedge
• Batch

Scan Mode

• Manual Trigger-Normal [⭐ Default]
• Presentation Mode

Aimer Mode

• Aimer Mode [⭐ Default]
• Off

Mobile Phone Read Mode

• Hand Held Scanning - Mobile Phone
• Streaming Presentation - Mobile Phone

Bluetooth [?] Remark

Selecting 'Higher Level RF Signal Checking' can improve BLE communication reliability but may reduce the communication distance.

• Normal Level RF Signal Checking [⭐ Default]
• Higher Level RF Signal Checking

• Disable Cradle Auto Pair
• Enable Cradle Auto Pair [⭐ Default]

System Reset & Info

• Factory Default: Resets settings and cleans Bluetooth [?] Link-key information.
• Send Info: Resets settings but keeps Bluetooth [?] Link-key information.

Data & Memory

Note: To erase buffer data, scan 'Enter Auto Buffer Erase' then scan 'Erase'. To erase batch files, scan 'Enter Batch File' then scan 'Erase'.

• Send Batch
• Free Buffer / Drive Space
• Erase
• Enter Auto Buffer Erase
• Enter Batch File Erase
• Erase Last Data Entry
• Reset Setting

Auto Power Off After Idle

• 15 Minutes [⭐ Default]
• 5 Minutes
• 30 Minutes
• 2 Hours
• 4 Hours
• 6 Hours
• 1 Hour
• Disable

Scanner Auto Presentation Mode

• Disable [⭐ Default]
• Enable

Beeper Control

• Low Volume
• Medium Volume [⭐ Default]
• High Volume
• Mute

Data Sending Inter Block Delay

• 10 ms [⭐ Default]
• 50 ms
• 100 ms
• 500 ms
• 1 Sec.
• 3 Sec.

HID Keyboard Case

• Auto Trace [⭐ Default]
• To Upper
• To Lower

HID Keyboard Character Delay

• 1 ms [⭐ Default]
• 5 ms
• 10 ms
• 20 ms
• 50 ms
• 100 ms

Data Terminator

• CR [⭐ Default]
• CRLF
• LF
• None/ Null
• TAB

HID Keyboard Language

• US English [⭐ Default]
• UK English
• French
• ALT Mode
• Norwegian
• Italian
• Belgian
• Danish
• German
• Spanish
• Japanese
• Swiss
• Swedish