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Incredibly compact indoor/outdoor AP with versatile mounting and long-range external antenna support.
Barely larger than a phone, the Swiss Army Knife fits where no other AP can: a narrow wall, a pole, a ceiling corner, a sheltered outdoor nook. It is a WiFi 5 unit — some third-party listings mislabel it as WiFi 6 — with an internal antenna for about 115 sq m, plus two RP-SMA connectors for optional external antennas when a longer link is needed. Its 8 W PoE draw makes it an easy add to any existing PoE switch.
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At a glance
Full technical details for the Ubiquiti Ubiquiti Swiss Army Knife UK-Ultra Outdoor Access Point. Need help comparing models? Our team can advise.
| Brand | Ubiquiti |
|---|---|
| Product code | UK-ULTRA |
| WiFi standard | WiFi 5 (802.11a/b/g/n/ac), dual-band 2.4 / 5 GHz |
| Spatial streams | 4 (2x2 on 2.4 GHz, 2x2 on 5 GHz) |
| Max rates | 300 Mbps (2.4 GHz) / 866.7 Mbps (5 GHz) |
| Concurrent clients | 200+ |
| Coverage | 115 sq m (1,250 sq ft) with internal antenna |
| Antennas | 1x internal (6 dBi both bands) + 2x RP-SMA connectors for optional external antennas (sold separately) |
| Ports | 1x GbE RJ45 (PoE in) |
| Power | PoE, 8 W max |
| Weatherproofing | IPX6 |
| Mounting | Wall, ceiling, pole (included) |
| Dimensions | 137 x 84 x 34 mm; Weight: 173 g |
| Security | WPA-PSK / WPA-Enterprise (WPA/WPA2, TKIP/AES) |
| Management | UniFi Network Application; Ethernet |
| Warranty | Manufacturer warranty |
FAQ
Answers to common questions about this product.
Because of its mounting versatility in a very small body: it mounts on a wall, ceiling or pole with the included kits, works indoors or outdoors (IPX6), and accepts optional external antennas — one unit that fits awkward spots other APs cannot.
No. It is a WiFi 5 (802.11ac) AP: 2x2 on both bands, 300 Mbps on 2.4 GHz and 866.7 Mbps on 5 GHz, rated for 200+ clients. Some third-party listings mislabel it as WiFi 6; the official datasheet is WiFi 5.
Two RP-SMA connectors accept optional external antennas (sold separately) to extend range or shape coverage. With its internal antenna alone it covers about 115 sq m.
PoE over its single GbE port, 8 W maximum — a light load for any PoE switch or injector.
The official UI store currently shows this model with no restock date. AccessStore lists it on an order basis with a 1–2 week delivery estimate; confirm supplier availability before promising a delivery date to a customer.
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