The DT-4-P from Microwave Devices Inc. is a RF Detector with Frequency 10 MHz to 18.5 GHz, Max Input Power 20 dBm, Max Input Power 0.1 W, Frequency Flatness ±0.5 dB, Voltage Sensitivity 0.5 mV/mW. Tags: Module with Connectors, Diode Detector. More details for DT-4-P can be seen below.