Keysight Technologies (formerly Agilent) 8487A50MHz-50GHz 100mW power sensor.
SWR, 1.25 at 18-26.5GHz, 1.3 at 26.5-40GHz, and 1.5 at 40-50GHz.
Power Range -30 to +20dBm (1uW to 100mW).
Connector 2.4mm (m).
Thermocouple 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-8487D or KT-N8487A/100