Keysight N1921A 50 MHz - 18 GHz Wideband Power Sensor -35 to +20 dBmCondition: Used Good working condition, as pictured. From the manufacturer: Peak, peak to average ratio, average power, rise time, fall time, maximum power, minimum power, and statistical data of wideband signals Frequency range: 50 MHz to 18 GHz Wide dynamic range for peak power measurements: 35 to +20 dBm Calibration factors, linearity, temperature, and bandwidth correction data are stored in EEPROM Zero and calibrate while connected to the DUT