The presence signal is WLAN-compatible, but does not require association of the transmitter with the WLAN and does not require a response from the WLAN.
存在信号是兼容于WLAN的，但是不需要把发送器与WLAN相关联并且不需要来自WLAN的响应。
The presence signal is WLAN-compatible, but does not require association of the transmitter with the WLAN and does not require a response from the WLAN.
存在信号是兼容于WLAN的，但是不需要把发送器与WLAN相关联并且不需要来自WLAN的响应。
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