Ubiquiti UA-G3-SK-PRO vs Speco Technologies A1: Specification Comparison
Both the Ubiquiti UA-G3-SK-PRO and the Speco Technologies A1 are single-door access controllers that support dual readers, placing them in the same 1-door access control device class a buyer would meaningfully cross-shop. The UA-G3-SK-PRO is a PoE-powered door hub bundled with two physical readers and keyfobs, while the A1 is a standalone 12 VDC controller requiring a separate power supply and external Wiegand readers. This comparison evaluates powering and installation approach, environmental and build specifications, and protocol and compliance characteristics.
In This Guide
- How do the two controllers differ in power delivery and installation requirements?
- Which controller is rated for harsher physical and electrical environments?
- How do reader protocol support, certifications, and ecosystem integration compare?
- Which should you choose: the UA-G3-SK-PRO or the A1?
- Side-by-Side Specs
- FAQ
How do the two controllers differ in power delivery and installation requirements?
The UA-G3-SK-PRO is powered by a single 802.3bt PoE++ cable at 48 V DC, consuming 5 W, which means a single Cat cable carries both data and power to the door — no separate low-voltage power run or local power supply is required. It ships with a Door Hub, one G3 Reader Pro, one G3 Reader, and two Pocket Keyfobs, so the complete single-door kit arrives in the box.
The A1 requires an external 12 VDC @ 2 A power supply (not included) and mounts as a standalone box controller. It supports dual Wiegand readers, which must also be sourced separately. The A1 includes two Form C relays rated 24 V @ 1.0 A for lock and auxiliary device control; the UA-G3-SK-PRO does not list relay output ratings in the provided specifications. The A1 also includes 8 GB eMMC onboard storage, which the UA-G3-SK-PRO specs do not reference.
Which controller is rated for harsher physical and electrical environments?
The UA-G3-SK-PRO carries an IP54 ingress-protection rating, a polycarbonate and stainless-steel enclosure, and ESD protection of ±15 kV (air) / ±8 kV (contact). Its operating temperature range spans −10 to 45 °C (14 to 113 °F), making it suitable for uncontrolled or semi-outdoor installations such as vestibules, parking structures, or exterior-adjacent spaces.
The A1 is rated for 10 °C to 35 °C (50 °F to 95 °F) only, a narrower band that assumes conditioned indoor environments. No IP ingress rating or ESD protection figure is provided in the A1's specifications. Its housing is described as white box-form. For installations subject to temperature extremes, moisture, or electrical transients, the UA-G3-SK-PRO's documented environmental ratings give it a measurable advantage; the A1's environmental ratings are not specified beyond operating temperature.
How do reader protocol support, certifications, and ecosystem integration compare?
The UA-G3-SK-PRO supports NFC Forum tags T1T through T5T and Apple Transaction Protocol (AppleTP), enabling mobile credential and Apple Wallet-based access in addition to physical keyfobs. It is certified CE, FCC, IC, UL 294, CAN/ULC-60839-11-1, and is explicitly NDAA-compliant. The network interface is 10/100 Mbps RJ45, and it operates within the Ubiquiti UniFi Access ecosystem.
The A1 supports dual Wiegand readers — the industry-standard protocol for legacy card readers — and is UL-294 ETL-listed. It processes 45+ transactions per second per the provided specifications. No mobile credential, NFC, or cloud-management platform is referenced in the A1's specs. The A1's UL-294 ETL listing satisfies the same core access-control compliance standard as the UA-G3-SK-PRO's UL 294 certification, but the A1 lacks an explicit NDAA-compliance designation and no additional radio or mobile-credential certifications are listed.
Which should you choose: the UA-G3-SK-PRO or the A1?
Our take: The UA-G3-SK-PRO is the stronger choice when the installation environment is semi-outdoor or electrically noisy, mobile credentials are required, or the site standardizes on PoE infrastructure. Key spec deltas: the UA-G3-SK-PRO operates from −10 to 45 °C versus the A1's 10 to 35 °C — a 30-degree wider cold tolerance — and carries an IP54 rating plus ±15 kV ESD protection that the A1 does not document. The UA-G3-SK-PRO is explicitly NDAA-compliant; the A1 is not designated as such. Conversely, the A1's dual Form C relays (24 V @ 1.0 A) and onboard 8 GB eMMC storage, combined with its 12 VDC conventional wiring, suit integrators whose sites already run low-voltage home-run cabling and Wiegand reader infrastructure. Choose the A1 for straightforward retrofit into existing Wiegand-centric, climate-controlled facilities; choose the UA-G3-SK-PRO for new PoE-centric deployments, government/federal procurement requiring NDAA compliance, or sites demanding mobile-credential support.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | Ubiquiti UA-G3-SK-PRO | Speco Technologies A1 |
|---|---|---|
| Door Capacity | 1 door, 2 readers | 1 door, 2 readers |
| Power Input | 48 V DC PoE++ (802.3bt) | 12 VDC @ 2 A (PSU not included) |
| Power Consumption | 5 W | — |
| Reader Protocol | NFC (T1T–T5T), AppleTP, keyfob | Wiegand (dual) |
| Relay Output | — | 2× Form C, 24 V @ 1.0 A |
| Onboard Storage | — | 8 GB eMMC |
| Processing Speed | — | 45+ transactions/sec |
| Operating Temp | −10 to 45 °C (14 to 113 °F) | 10 to 35 °C (50 to 95 °F) |
| IP Rating | IP54 | — |
| ESD Protection | Air ±15 kV / Contact ±8 kV | — |
| Enclosure Material | Polycarbonate & stainless steel | White box (material not specified) |
| Network Interface | 10/100 Mbps RJ45 | — |
| Certifications | CE, FCC, IC, UL 294, CAN/ULC-60839-11-1 | UL-294 ETL-listed |
| NDAA Compliant | Yes | — |
| Mount Type | Surface / DIN-rail | Box mount |
| Warranty | Manufacturer warranty (duration not specified) | 2-year |
Frequently Asked Questions
Which should you choose: the UA-G3-SK-PRO or the A1?
The UA-G3-SK-PRO is the stronger choice when the installation environment is semi-outdoor or electrically noisy, mobile credentials are required, or the site standardizes on PoE infrastructure. Key spec deltas: the UA-G3-SK-PRO operates from −10 to 45 °C versus the A1's 10 to 35 °C — a 30-degree wider cold tolerance — and carries an IP54 rating plus ±15 kV ESD protection that the A1 does not document. The UA-G3-SK-PRO is explicitly NDAA-compliant; the A1 is not designated as such. Conversely, the A1's dual Form C relays (24 V @ 1.0 A) and onboard 8 GB eMMC storage, combined with its 12 VDC conventional wiring, suit integrators whose sites already run low-voltage home-run cabling and Wiegand reader infrastructure. Choose the A1 for straightforward retrofit into existing Wiegand-centric, climate-controlled facilities; choose the UA-G3-SK-PRO for new PoE-centric deployments, government/federal procurement requiring NDAA compliance, or sites demanding mobile-credential support.
Can the UA-G3-SK-PRO or the A1 work with my existing Wiegand card readers?
The A1 is explicitly designed for dual Wiegand readers, making it a direct fit for existing Wiegand infrastructure. The UA-G3-SK-PRO ships with its own proprietary G3 readers and supports NFC and AppleTP credentials; Wiegand compatibility is not stated in the provided specifications for the UA-G3-SK-PRO, so confirm with Ubiquiti before assuming backward compatibility.
Which controller is better suited for an outdoor or unconditioned space like a parking garage or loading dock?
The UA-G3-SK-PRO is the documented choice for those environments. It carries an IP54 ingress-protection rating, operates from −10 to 45 °C, and provides ±15 kV ESD protection. The A1's operating range tops out at 35 °C with no IP rating or ESD figure listed, making it suitable for conditioned indoor spaces only based on available specifications.
Does either controller support government or federal projects requiring NDAA compliance?
The UA-G3-SK-PRO is explicitly listed as NDAA-compliant in its specifications. The A1's provided specifications do not include an NDAA-compliance designation. For federal or NDAA-sensitive procurements, the UA-G3-SK-PRO is the confirmed option between these two products.
More Access Controller Comparisons
- Ubiquiti UA-G3-SK-PRO vs Geovision AS1620
- Ubiquiti UA-G3-SK-PRO vs Ubiquiti UA-HUB-DOOR-MINI
- Ubiquiti UA-HUB-DOOR-MINI vs Speco Technologies A1
- Ubiquiti UA-HUB-DOOR-MINI vs Geovision AS1620
- Speco Technologies A1 vs Geovision AS1620
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