Ubiquiti UA-G3-SK Single-Door Access Control Reader
Overview
The Ubiquiti UA-G3-SK (often searched as UA G3 SK) is a compact PoE-powered access control reader designed for single-door authentication in small-to-medium facilities. This reader integrates with Ubiquiti's cloud-based UniFi Access management platform, enabling centralized credential control, audit logging, and real-time access event tracking across distributed locations without requiring on-premises access control infrastructure. The UA-G3-SK is NDAA compliant, making it suitable for government and defense-sector deployments where supply chain integrity matters.
Key Features
- Compact, durable form factor: Measures 84 × 39 × 7.4 mm and weighs only 16 grams, so it mounts easily to existing door frames or architectural surfaces using included aluminum alloy mounting hardware without structural modifications or visible bulk.
- IP54 environmental protection: Polycarbonate and stainless steel enclosure with silicone rubber gaskets protects against dust ingress and low-pressure water jets — suitable for indoor and semi-outdoor vestibules, but not full submersion or direct rain exposure. This rating means you can deploy it in entry lobbies and covered porches without moisture concerns.
- Wide operating temperature range (-10 to 45°C): Performs reliably in climate-controlled offices, industrial facilities, and unheated entry vestibules — avoids the need for heated enclosures in temperate regions.
- PoE power delivery (48V DC, 5W maximum): Draws only 5 watts, so it operates on standard 802.3af PoE-enabled switch ports without straining power budgets or requiring dedicated power infrastructure. A single Ethernet cable handles both network and power — reduces installation labor and cable clutter.
- Single 10/100 Mbps Ethernet port: Standard RJ45 connectivity to any managed network. No special cabling or network equipment required beyond a PoE switch port.
- High-voltage ESD protection (±15 kV air, ±8 kV contact): Protects the reader from electrostatic discharge during installation and use, reducing field failures and warranty claims in low-humidity environments.
Cloud-Based Access Management
The UA-G3-SK connects to UniFi Access, Ubiquiti's cloud-managed platform. This architecture eliminates the need for on-premises access control servers, reducing capital costs and ongoing maintenance overhead — particularly valuable for multi-site deployments where branch locations lack IT staff. Policy changes, credential issuance, and revocation happen centrally; audit logs are automatically time-stamped and retained for compliance review. If your network has reliable internet connectivity, the cloud model streamlines workflows. However, if connectivity drops, the reader cannot grant new access until the connection is restored — a real consideration for facilities that prioritize offline availability.
Deployment Fit
The UA-G3-SK addresses entry control for single-door applications: retail locations requiring employee badge access, office suites with restricted areas, medical facilities managing HIPAA-controlled zones, and data centers with equipment room protection. It also serves as a pilot reader for multi-site organizations evaluating cloud-based access control before broader rollout. The compact form factor and low power draw make it practical for branch locations, temporary deployments, or retrofits where space is tight.
Certifications and Compliance
The device holds CE, FCC, IC, UL 294, and CAN/ULC-60839-11-1 certifications, confirming compliance with North American and European safety and electromagnetic standards. NDAA compliance supports procurement by U.S. government and defense-adjacent organizations.
Frequently Asked Questions
Q: Is the UA-G3-SK cloud-dependent, or can it work offline?
A: The UA-G3-SK requires cloud connectivity to UniFi Access for policy updates, credential issuance, and new access grants. If internet connectivity drops, the reader cannot authenticate new access attempts until the connection is restored. It is not designed for offline-first deployments. If offline availability is critical, evaluate access control systems with local authentication caches or on-premises management.
Q: What credential types does the UA-G3-SK support?
A: The evidence provided does not specify supported credential formats (RFID, NFC, Bluetooth, PIN, etc.). Contact Ubiquiti or your authorized integrator for detailed credential compatibility and UniFi Access feature support.
Q: Can I integrate the UA-G3-SK with an existing Ubiquiti UniFi network?
A: Yes. The UA-G3-SK integrates with existing UniFi networks using the same management console, leveraging your current switch and network infrastructure. No separate access control network is required.
Q: What is the warranty period for the UA-G3-SK?
A: Warranty terms are not included in the available product documentation. Contact your specialty reseller or Ubiquiti directly for warranty coverage details.
Q: Does the UA-G3-SK support ONVIF or third-party VMS integration?
A: The UA-G3-SK is designed for UniFi Access management. Evidence does not confirm ONVIF or third-party VMS compatibility. Confirm integrations with Ubiquiti or your systems integrator before purchase.
Q: Can the UA-G3-SK be wall-mounted or ceiling-mounted?
A: The UA-G3-SK includes aluminum alloy mounting hardware for door frame and architectural surface installation. Confirm with Ubiquiti or your integrator that your specific mounting orientation is supported.
Jerry TildsenPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
The Ubiquiti UA-G3-SK is a practical single-door reader for organizations already invested in the UniFi ecosystem or piloting cloud-based access control. The PoE-only power model (5W at 48V) and compact aluminum-mounted form factor reduce installation friction significantly — you're looking at a 15-minute job on existing structured cabling. The IP54 rating and -10 to 45°C operating range make vestibule and semi-outdoor deployments feasible. For integrators, the cloud dependency is the critical tradeoff: it simplifies central management across multiple sites and eliminates on-premises server overhead, but ties availability to internet connectivity. No offline fallback credentials.
Technical Highlights:
- 5W PoE power draw: Operates on standard 802.3af ports without power budget strain — particularly useful when retrofitting branch offices or dense multi-reader installations on a single switch.
- IP54 + stainless steel/polycarbonate enclosure: Dust and low-pressure water jets won't compromise the reader, but skip this for outdoor exposed installs — IP67 variants would be required for direct rain or submersion scenarios.
- ±15 kV air / ±8 kV contact ESD protection: Real protection against field failures during summer installations or low-humidity warehouse environments — reduces callbacks and warranty cost.
Deployment Considerations:
- Cloud-first architecture: credential updates and access decisions route through UniFi Access. Internet outages = no new grants until connectivity is restored. Design accordingly for facilities that cannot tolerate offline access windows.
- Single-reader scope: this is a single-door control point. Multi-door installations require multiple UA-G3-SK units, each consuming one switch port and one PoE slot.
Best suited for retail, office suites, data center equipment rooms, or branch locations where reliable internet is a given and centralized cloud management simplifies multi-site ops. If offline resilience or complex access policies are non-negotiable, evaluate Ubiquiti's on-premises UniFi Access variants or third-party platforms with local caching.
