5GHz AirMax AC Sector Antenna, 22dBi, 45 deg

Signal quality by dBm The wireless link signal is measured in decibels (dB) with a negative value, so the closer this value is to zero, the better the signal quality. 0dBm to -50dBm: high-quality signal (if this result is obtained, the antenna's transmit power needs to be reduced) (-50dBm) to (-60dBm): good-quality signal (-60dBm) to (-70dBm): medium-quality signal (-70dBm) and weaker: low-quality signal