www.microwavejournal.com/articles/28651-high-sensitivity-threshold-detector-td-30t-shs-218-amp-opt4g4d5g-40dbm

High Sensitivity Threshold Detector: TD-30T-SHS-218-AMP-OPT4G4D5G-40DBM
June 19, 2017
PMI Model No. TD-30T-SHS-218-AMP-OPT4G4D5G-40DBM is an ultra-high speed, high sensitivity threshold detector optimized for the 4.0 to 4.5 GHz frequency range. This unit has a fixed threshold level of -40 dBm. It is a miniature unit with TTL output logic.
Package size 2.5"(L) x 2.0"(W) x 0.5"(H) with SMA (F) connectors.
http://www.pmi-rf.com/Products/detectors/TD-30T-SHS-218-AMP-OPT4G4D5G-40DBM.htm