dBm

dBm is a measurement used to express the strength or power of a signal, often in telecommunications and radio systems. It relates the power level to one milliwatt (0.001 watts) using a logarithmic scale, which makes it easier to compare very large or small values. For example, 0 dBm equals 1 milliwatt, while -30 dBm indicates a much weaker signal, 30 times less power. This measurement helps engineers assess signal quality, strength, and interference in wireless networks and electronic devices efficiently.