Keysight Technologies (formerly Agilent) 8487D50MHz to 50GHz high sensitivity power sensor.
SWR 1.86 at 40 to 50GHz.
Power Range -70 to -20dBm (100pW to 10uW)
Connector 2.4mm (m).
Diode power sensor is designed for use with power meters:
KT-435B, KT-436A, KT-437B, KT-438A
KT-E4418A, KT-E4418B, KT-E4419A, or KT-E4419B
KT-E4416A or KT-E4417A
See also KT-E4413A