Ubiquiti UMA-D, Outdoor UV Stabilized Plastic, Supported Frequency Range 2.4-2.5GHz, 5.1-5.9GHz, Gain 10dBi, Dual-Linear, Cross-Pol Isolation 25dB. The UniFi Antenna, model UMA-D, is an optional mesh antenna designed to work with the UniFi® AC Mesh AP and model UAP-AC-M. With dual-band support, the UMA-D expands range coverage.