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The 80334A from Giga-tronics is a Power Sensor with Frequency 10 MHz to 40 GHz, Max Input Power +33 dBm (2 W). More details for 80334A can be seen below.
TVAC compliant USB and LAN Power Sensor
10 MHz to 8 GHz Three-path Diode Power Sensors
You can now find similar products from multiple companies on everything RF.