The HLM-100001BH from Marki Microwave is a Power Limiter with Frequency DC to 10 GHz, Input Power 27 dBm (IP3), Limited Output Power 36.02 dBm, Limited Output Power 4 W, Insertion Loss 1 dB. Tags: Module with Connectors, Schottky Diode. More details for HLM-100001BH can be seen below.