RSSI (Received Signal Strength Indication) 接收的信号强度指示。

◇ 参考情報 : RSSI is the amplitude level of the wireless network as seen by a computers wireless card.
The following will help you in determining what is a good RSSI and a poor RSSI :

如下的表可以用于判断一个好的RSSI值和一个差的RSSI值:

Quality

Excellent

Good

Fair

Poor

dBm

-30 ~ -61

-63 ~ -73

-75 ~ -85

-87 ~ -97