The DQS004 from Herotek is a RF Detector with Bias Current 100 to 180 µA, Frequency 0.1 to 4 GHz, TSS -55 to -52 dBm, Frequency Flatness ±0.3 to ±0.4 dB, Voltage Sensitivity 2000 to 3800 mV/mW. Tags: Connectorized, Diode Detector. More details for DQS004 can be seen below.