Received Signal Strength Indicator. RSSI is a measurement of the power level present in a received radio signal. RSSI is used to determine wireless signal strength and quality. It can help troubleshoot connectivity issues.
RSSI is measured in dBm (decibels relative to one milliwatt). Typical values range from -30 dBm (excellent signal) to -90 dBm (very weak signal). The higher the dBm value, the stronger the signal. -30 dBm is a much stronger signal than -90 dBm for example. RSSI measurements fluctuate rapidly, so values typically need to be averaged over time for accuracy. Factors like distance, obstacles, interference, weather, and network traffic can affect RSSI.
Thus, when an RSSI value is represented in a negative form (e.g. −100), the closer the value is to 0, the stronger the received signal has been.
In the Keilton system, when RSSI <= -60 dBm the signal is considered GOOD. When RSSI <= -80dbm the signal is considered ACCEPTABLE.