The CPDETLS-4000 from Crystek Corporation is a RF Detector with Frequency 10 MHz to 4 GHz, Max Input Power Greater than -10 dBm, Operating Temperature -20 to 70 Degree C, Storage Temperature -40 to 85 Degree C. Tags: Connectorized, Diode Detector. More details for CPDETLS-4000 can be seen below.