device select code

例句：

1. 1. The device selectcode is used to determine which device to connect to.
   设备选择代码用于确定要连接的设备。
2. 2. The device select code must be entered correctly for the device to work properly.
   设备选择代码必须正确输入，才能使设备正常工作。
3. 3. The device select code is stored in a secure location to prevent unauthorized access.
   设备选择代码存储在安全的位置，以防止未经授权的访问。