Ubiquiti UAP-AC-PRO-5-US vs Ubiquiti UK-ULTRA: Specification Comparison
Both the Ubiquiti UAP-AC-PRO-5-US and the UK-ULTRA are dual-band 802.11ac (Wi-Fi 5) access points designed for indoor/outdoor deployment, making them legitimate cross-shop candidates for installers evaluating Ubiquiti's portfolio. The comparison centers on throughput capacity, environmental ruggedness, power infrastructure requirements, and mounting flexibility — key decision axes when specifying APs for enterprise campuses, hospitality sites, or harsh outdoor installations where pole versus ceiling/wall placement and PoE budget constraints drive the final choice.
In This Guide
- Which AP delivers more throughput and radio capacity for your client density?
- Which unit is better suited to harsh outdoor or extreme-temperature deployments?
- What PoE infrastructure and mounting approach does each AP require?
- Which should you choose: the UAP-AC-PRO-5-US or the UK-ULTRA?
- Side-by-Side Specs
- FAQ
Which AP delivers more throughput and radio capacity for your client density?
The UAP-AC-PRO-5-US provides a combined throughput of 1,750 Mbps — 1,300 Mbps on 5 GHz and 450 Mbps on 2.4 GHz — and is documented to support 50 to 300 concurrent clients. It ships in a 5-pack (as denoted by the '-5-US' suffix), which is relevant for multi-AP deployments where per-unit radio performance compounds across a site.
The UK-ULTRA delivers 866.7 Mbps on 5 GHz and 300 Mbps on 2.4 GHz for a lower aggregate throughput ceiling. Its spec lists 8 BSSIDs per radio for VLAN segmentation, which is useful for multi-tenant or guest-network scenarios. No concurrent client count is specified in the provided data. For high-density environments where raw 5 GHz headroom matters, the UAP-AC-PRO-5-US holds a roughly 50% throughput advantage on the 5 GHz radio alone (1,300 Mbps vs. 866.7 Mbps).
Which unit is better suited to harsh outdoor or extreme-temperature deployments?
The UK-ULTRA carries an IPX6 ingress protection rating, meaning it is tested against powerful water jets — a defined and verifiable environmental standard. Its operating temperature range spans −40 to 60 °C (−40 to 140 °F), and its UV-stabilized polycarbonate enclosure is explicitly rated for prolonged sun exposure. Wind loading is specified at 33.2 N at 200 km/h (7.5 lbf at 125 mph), and it weighs only 173 g. It also holds NDAA compliance per the provided specs.
The UAP-AC-PRO-5-US is described as indoor/outdoor capable with an operating range of −10 to 50 °C (14 to 122 °F). No IP ingress protection rating is listed in the provided specifications, and no wind-load figure is documented. For deployments in coastal, industrial, or high-altitude environments where temperature extremes below −10 °C or water-jet exposure are realistic conditions, the UK-ULTRA's certified ratings provide a documented advantage the UAP-AC-PRO-5-US specs do not match.
What PoE infrastructure and mounting approach does each AP require?
The UAP-AC-PRO-5-US requires 802.3at PoE+ (up to ~13 W maximum) and includes a PoE adapter in the package. It supports wall, ceiling, and rack mounting, and its two RJ-45 ports enable daisy-chaining for simplified cabling runs. At 6.950 lb (per the provided spec), it is a heavier unit suited to permanent ceiling or wall installations.
The UK-ULTRA operates on standard 802.3af PoE (44–57 V DC, 8 W maximum), meaning it can draw power from a wider base of existing PoE switches without infrastructure upgrades. It is purpose-designed for 1–2 inch pole mounting (25–50 mm), making it the natural fit for utility poles, streetlight arms, and outdoor mast installations. With a single GbE RJ-45 port and a weight of 173 g, cabling and mechanical installation are simpler in pole-mount scenarios. Installers with existing 802.3af-only switch infrastructure will find the UK-ULTRA integrates without additional injectors or switch upgrades required by the UAP-AC-PRO-5-US's PoE+ demand.
Which should you choose: the UAP-AC-PRO-5-US or the UK-ULTRA?
Our take: The UAP-AC-PRO-5-US is the stronger choice when throughput capacity and client density are the primary constraints — its 1,300 Mbps 5 GHz radio and 1,750 Mbps combined figure outpace the UK-ULTRA's 866.7 Mbps / 1,166.7 Mbps ceiling by roughly 50% on 5 GHz, and it is spec-documented to handle 50–300 concurrent clients. The UK-ULTRA is the correct selection for harsh outdoor pole-mount deployments: its IPX6 water-jet rating, −40 to 60 °C operating range (30 °C lower floor than the UAP-AC-PRO-5-US's −10 °C), and NDAA compliance are documented capabilities the UAP-AC-PRO-5-US specs do not substantiate. Additionally, the UK-ULTRA's 8 W 802.3af draw avoids the PoE+ infrastructure requirement of the UAP-AC-PRO-5-US. Both units run Wi-Fi 5 on the same Ubiquiti platform; the decision ultimately reduces to client-density versus environmental-survivability as the governing constraint.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | Ubiquiti UAP-AC-PRO-5-US | Ubiquiti UK-ULTRA |
|---|---|---|
| Wi-Fi Standard | 802.11ac (Wi-Fi 5) | 802.11ac (Wi-Fi 5) |
| 5 GHz Throughput | 1,300 Mbps | 866.7 Mbps |
| 2.4 GHz Throughput | 450 Mbps | 300 Mbps |
| Combined Throughput | 1,750 Mbps | 1,166.7 Mbps |
| Concurrent Clients (documented) | 50–300 | — |
| PoE Standard Required | 802.3at (PoE+) | 802.3af (PoE) |
| Max Power Consumption | ~13 W | 8 W |
| Ethernet Ports | 2x RJ-45 (daisy-chain) | 1x GbE RJ-45 |
| IP Ingress Rating | — | IPX6 |
| Operating Temperature | −10 to 50 °C | −40 to 60 °C |
| Weight | 6.950 lb | 173 g (6.1 oz) |
| Dimensions | 139.7 × 86.7 × 25.75 in (per spec) | 137 × 84 × 34 mm |
| Mount Type | Wall / Ceiling / Rack | Pole mount (1–2 in / 25–50 mm) |
| NDAA Compliant | — | Yes |
| VLAN / BSSID Support | — | 8 BSSIDs per radio |
| Certifications | CE, FCC, IC | CE, FCC, IC, Anatel |
Frequently Asked Questions
Which should you choose: the UAP-AC-PRO-5-US or the UK-ULTRA?
The UAP-AC-PRO-5-US is the stronger choice when throughput capacity and client density are the primary constraints — its 1,300 Mbps 5 GHz radio and 1,750 Mbps combined figure outpace the UK-ULTRA's 866.7 Mbps / 1,166.7 Mbps ceiling by roughly 50% on 5 GHz, and it is spec-documented to handle 50–300 concurrent clients. The UK-ULTRA is the correct selection for harsh outdoor pole-mount deployments: its IPX6 water-jet rating, −40 to 60 °C operating range (30 °C lower floor than the UAP-AC-PRO-5-US's −10 °C), and NDAA compliance are documented capabilities the UAP-AC-PRO-5-US specs do not substantiate. Additionally, the UK-ULTRA's 8 W 802.3af draw avoids the PoE+ infrastructure requirement of the UAP-AC-PRO-5-US. Both units run Wi-Fi 5 on the same Ubiquiti platform; the decision ultimately reduces to client-density versus environmental-survivability as the governing constraint.
Is the UAP-AC-PRO-5-US or UK-ULTRA better for a high-density indoor venue like a conference center or warehouse?
Based on the provided specs, the UAP-AC-PRO-5-US is the stronger candidate for high-density indoor use. It delivers 1,750 Mbps combined (vs. 866.7 Mbps + 300 Mbps for the UK-ULTRA) and is documented to support 50–300 concurrent clients. The UK-ULTRA's client-density ceiling is not specified, and its lower throughput ceiling makes it a less suitable primary unit where many simultaneous clients are expected.
Can the UK-ULTRA run on my existing 802.3af PoE switches, or do I need to upgrade?
Per the provided specs, the UK-ULTRA operates at 8 W maximum on 44–57 V DC PoE, which falls within the 802.3af standard's delivery capability. The UAP-AC-PRO-5-US, by contrast, requires 802.3at PoE+ (~13 W max). If your switch infrastructure is 802.3af-only, the UK-ULTRA can be powered directly; the UAP-AC-PRO-5-US would require either a PoE+ capable switch or an 802.3at injector.
Which unit is rated for extreme cold or wet outdoor environments like a parking structure or coastal site?
The UK-ULTRA is the documented choice for extreme outdoor conditions. Its specs list an IPX6 water-jet ingress rating, a −40 to 60 °C operating temperature range, and a UV-stabilized polycarbonate enclosure. The UAP-AC-PRO-5-US has no IP rating listed in the provided specifications and is rated only to −10 °C at the low end. For sites with freezing temperatures, heavy rain, or salt-air exposure, the UK-ULTRA's certified environmental ratings give installers a defensible specification basis that the UAP-AC-PRO-5-US data does not provide.
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