The 12218L from Berkeley Nucleonics Corp is a RF Power Meter & Sensor with Frequency 50 MHz to 18 GHz, Power Range -50 to 20 dBm (Avg), '-40 to 20 dBm (Pulse), Bandwidth 6 MHz (Single Shot Bandwidth), Current 480 to 500 mA. Tags: Power Sensor. More details for 12218L can be seen below.