The 12126L from Berkeley Nucleonics Corp is a RF Power Meter & Sensor with Frequency 9 kHz to 26.5 GHz, Power Range -60 to 26 dBm, Peak Power Range 33 dBm (Peak), Resolution 1 us (Trigger), Voltage 10 to 16 V. Tags: Power Sensor. More details for 12126L can be seen below.