The HLM-40ABH from Marki Microwave is a Power Limiter with Frequency DC to 40 GHz, Input Power 29 to 35 dBm (IP3), Limited Output Power 33.01 dBm, Limited Output Power 2 W, Insertion Loss 0.7 dB. Tags: Module with Connectors, Schottky Diode. More details for HLM-40ABH can be seen below.