- Description
- Specifications
Compact Indoor/Outdoor WiFi 5 AP with Versatile Mounting and External Antenna Support
The Ubiquiti UniFi Swiss Army Knife Ultra (UK-Ultra) is an ultra-compact WiFi 5 (802.11ac) access point with 4 spatial streams, IPX6 weather resistance, and two RP-SMA connectors for optional external antennas. At 5.4 x 3.3 x 1.3 inches and 6.1 ounces, it mounts on walls, ceilings, or poles with included hardware and covers up to 1,250 sq ft with 200+ concurrent clients.
The UK-Ultra earns its name by fitting anywhere: indoor ceiling, outdoor pole, wall mount, or temporary deployment. The internal antenna handles standard coverage, while the RP-SMA ports accept directional or high-gain antennas (like the UMA-D) for extended reach in specific directions. IPX6 rating means direct water jets from any direction, making it fully outdoor-rated without an enclosure. Managed through the same UniFi Network dashboard as all other UniFi devices.
Where the UK-Ultra Fits
- Outdoor patios, courtyards, and building exteriors where a compact IPX6-rated AP mounts on a pole or wall and covers the area without a separate weatherproof enclosure
- Tight indoor spaces and utility areas where a full-size ceiling AP is overkill and the ultra-compact form factor fits behind a panel, inside a cabinet, or on a narrow wall
- Extended-range deployments where the RP-SMA connectors accept a directional external antenna to push coverage down a hallway, across a parking lot, or toward a specific zone
What the UK-Ultra Delivers
- WiFi 5 (802.11ac), 4 spatial streams: Dual-band 2.4 GHz + 5 GHz with up to 866.7 Mbps on 5 GHz. Covers 1,250 sq ft with 200+ concurrent clients from a palm-sized enclosure.
- IPX6 weather resistance: Rated against high-pressure water jets from any direction. Fully outdoor-rated for exposed pole mounts, eaves, and building faces without an enclosure.
- 2x RP-SMA external antenna ports: Attach directional or high-gain antennas to shape coverage beyond the internal antenna pattern. Use the UMA-D for focused long-range coverage in one direction.
- Wall, ceiling, and pole mount included: All mounting hardware ships in the box. Deploy on any surface or structure without sourcing aftermarket brackets.
- PoE powered, 8W: Single Ethernet cable provides power and data from any 802.3af PoE switch. 8W total draw leaves PoE budget available for other devices on the same switch.
Build and Mounting
Compact enclosure (5.4 x 3.3 x 1.3 in., 6.1 oz). WiFi 5 (802.11ac) dual-band, 4 spatial streams, 866.7 Mbps max. 1x Gigabit RJ45 (PoE powered, 802.3af). 2x RP-SMA for external antennas. IPX6 weather resistant. 8W max power consumption. Wall, ceiling, and pole mount hardware included. 200+ concurrent clients. Managed through UniFi Network. Part Number: UK-Ultra.
