> For the complete documentation index, see [llms.txt](https://smartpossdk.gitbook.io/cloudpossdk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://smartpossdk.gitbook.io/cloudpossdk/faq/other-development/q3-pda-terminal-barcode-scanner.md).

# Q3 PDA Terminal Barcode Scanner

## The scanner head is a Honeywell scanner with the following specifications:

* **Accuracy**: ≥3mm
* **Rotation Angle**: 360°
* **Scan Angle**: Tilt ±60°, Pan ±60°
* **Field of View**:
  * Horizontal: 44.3°
  * Vertical: 28.4°
* **Focus**: 51°
* **Default Focus**: FF fixed focus

## Physical Button Introduction for Scanning

### Left/Right Scan button 

Used to start the scanning operation. Pressing the button activates the scanner head to begin scanning and decoding barcodes or QR codes.

<figure><img src="https://3254882245-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTv6FkzHXX8QyxZpeenq6%2Fuploads%2FawNcxUsaUdlUq3Ixt7Wh%2Fimage.png?alt=media&amp;token=543d743f-e4ca-4657-bc00-df0175c7a086" alt=""><figcaption></figcaption></figure>

### Center button

Used to call the parameter settings. Pressing the button allows access to the settings menu for adjusting scanner parameters.

<figure><img src="https://3254882245-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTv6FkzHXX8QyxZpeenq6%2Fuploads%2F48JZFuZddJUM5qG9GFIQ%2Fimage.png?alt=media&amp;token=24bfa00f-697c-486b-bb18-39b7ed73c6c1" alt=""><figcaption></figcaption></figure>

## Getting Started Steps

1. When you first receive the device, you need to connect the terminal to the network first, then press the center button on the right side to enter the settings menu and activate the license.

<figure><img src="https://3254882245-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTv6FkzHXX8QyxZpeenq6%2Fuploads%2F6KO1VsZ0DkQFLzk7LFFC%2Fimage.png?alt=media&amp;token=6117fa39-d9fd-4fc0-ab39-bf4d2c676f26" alt=""><figcaption></figcaption></figure>

2. During regular use：

* Press the left scan button or right scan button to scan product barcodes or QR codes.
* After a successful scan, the device will return the scan result or provide feedback (such as sound, vibration, or light) to indicate success.

## Download [Scan demo](https://github.com/SmartPOSSamples/ScanTextDemo)