The DD-1G40G-ZBS-SFF-OPT4G26D5G from Quantic PMI (Planar Monolithics) is a RF Detector with Frequency 4 to 26.5 GHz, Max Input Power 20 dBm, Frequency Flatness ±1.0 to 1.75, VSWR 2.00:1, Operating Temperature -45 to 85 Degree C. Tags: Module with Connectors, Diode Detector. More details for DD-1G40G-ZBS-SFF-OPT4G26D5G can be seen below.