The ZD-14-X from MCLI is a RF Detector with Frequency 10 MHz to 40 GHz, Max Input Power 23.01 dBm, Frequency Flatness ±1 dB, Voltage Sensitivity 400 mV/mW, VSWR 1.80:1. Tags: Module with Connectors, Diode Detector. More details for ZD-14-X can be seen below.