The TD-23T-SS-218 from Quantic PMI (Planar Monolithics) is a RF Detector with Frequency 2 to 18 GHz, Max Input Power 10 dBm, Dynamic Range -23 to -18 dbm, Supply Voltage 12 V, Current 50 mA. Tags: Module with Connectors, Threshold Detector. More details for TD-23T-SS-218 can be seen below.