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| Customization: | Available | 
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| Network Scanning: | Support Network | 
| Type: | Engine | 
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. | 
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Pin  | Definition  | I/O  | Description  | 
1  | NC  | -  | Floating  | 
2  | VCC  | -  | 3.3V Power Input  | 
3  | GND  | -  | GND  | 
4  | RX  | I  | Receive TTL  | 
5  | TX  | O  | Send TTL  | 
6  | D-  | I/O  | USB D- Signal  | 
7  | D+  | I/O  | USB D+ Signal  | 
8  | NC  | -  | -  | 
9  | BUZZER  | O  | Passive buzzer output signal, output low level when idle  | 
10  | LED  | O  | Indicator light output signal, output low level when idle  | 
11  | RESET  | I  | Input reset signal, low level is valid. Scan engine can be reset if the low level keeps above 100us.  | 
12  | nTRIG  | I  | Trigger Key input signal, scanning can be triggered if the low level keeps above 5ms.  | 










