N3RU-OD stands for Nano Power Remote Unit 3.0 (outdoor), which is a nano-power remote unit of SUNWAVE’s 3rd-generation CrossFire platform system (CrossFire 3.0). It connects A3/E3 through fiber optic cables and converts the digital signals received from A3/E3 into RF signals before transmitting them through an antenna. One N3RU-OD supports 8 channels, with a single channel capable of supporting a 300 MHz bandwidth, multiple frequency bands, and flexible networking. It has two versions: external antenna type and integrated antenna type. It can be used in conjunction with indoor RUs to meet customers’ diverse spatial design scenarios. It can support ORAN by upgrading its firmware.