Key Features . For UAP-AC-MDual-polarity antenna optimised for 802.11acOffers a directional radiation pattern and a three-axis ball joint for precise aiming The UniFi Antenna model UMA-D is an optional mesh antenna designed to work with the UniFi(r) AC Mesh AP model UAP-AC-M. With dual-band support the UMA-D expands range coverage and provides customized pattern shaping. It is available in single- and five-packs. Antenna Features Optimized for 802.11ac the UMA-D offers a high efficiency directional radiation pattern with dual polarity. Weather-Resistant Enclosure Encased in UV-stabilized plastic the UMA-D can be used indoors or outdoors. Versatile Mounting The UMA-D has a ball joint mount designed for precise aiming and can be mounted on a pole or wall. Compatibility The UMA-D is a connectorized antenna that is compatible with the UAP-AC-M..