The Ericsson 2212 B31 KRC 161 893/1 is a Remote Radio Unit RRU designed for wireless communication systems. It supports various frequency bands and is used to transmit and receive signals in a base station configuration. The Ericsson 2212 B31 is compact in size and can be easily installed and deployed in different environments. It offers high-performance capabilities and efficient signal processing for enhanced network coverage and capacity.