The ACSM-2002N from Cobham Advanced Electronic Solutions is a RF Detector with Frequency 2 to 4 GHz, Max Input Power 15 dBm, TSS -53 dbm, Frequency Flatness ±0.4 dB, Voltage Sensitivity 2000 mV/mW. Tags: Two Pin, Zero-Bias Schottky Diode. More details for ACSM-2002N can be seen below.