The ZX47-55+ from Mini Circuits is a RF Detector with Frequency 10 MHz to 8 GHz, Max Input Power 18 dBm, Dynamic Range -55 to 10 dBm, Supply Voltage 4.5 to 5.7 V, Current 100 to 120 mA. Tags: Module with Connectors, Power Detector. More details for ZX47-55+ can be seen below.