The ZD-7-X from MCLI is a RF Detector with Frequency 1 MHz to 2 GHz, Max Input Power 23.01 dBm, Frequency Flatness ±0.3 dB, Voltage Sensitivity 500 mV/mW, VSWR 1.30:1. Tags: Module with Connectors, Diode Detector. More details for ZD-7-X can be seen below.