The SFD-273403-28SF-P1 from ERAVANT is a RF Detector with Frequency 26.5 to 40 GHz, Max Input Power -20 to 17 dBm, Voltage Sensitivity 1300 mV/mW, Video Bandwidth 10 MHz. Tags: Module with Connectors, Waveguide, Diode Detector. More details for SFD-273403-28SF-P1 can be seen below.