The TC-4002 Inline 4,000 watt test meter offers a large 4-1/2" meter for easy viewing and provides four wattage settings, 0 - 20, 0 - 200, 0 - 2000 and 0 - 4000. Measures RMS and Peak Power, Antenna SWR, Modulation Percentage, SSB Modulation and has a built-in four position antenna selector switch.