Ubiquiti UA-G2 Compact NFC/Bluetooth Access Reader
The Ubiquiti UA-G2 is a compact in-wall proximity reader purpose-built for UniFi access control deployments. It supports NFC, Bluetooth 4.1, and Mifare card credentials, enabling credential-based entry authentication without swapping legacy card infrastructure. The 93 x 40 mm form factor mounts directly into standard gang boxes, reducing installation labor on retrofit door openings while maintaining a clean aesthetic in commercial office, education, and multi-tenant facilities.
Key Features
- Tri-Mode Credential Support: NFC, Bluetooth 4.1, and Mifare proximity cards. Supports mixed credential deployment during card-to-mobile migration without forcing simultaneous fleet replacement.
- PoE 802.3af Powered: 5W draw—runs on any standard PoE switch. No external power supply or battery backup needed at the reader; controller-level backup covers offline operation.
- IP55 Environmental Rating: Polycarbonate and glass enclosure withstands moisture, dust, and splash from cleaning. Suitable for both interior office and light-duty exterior vestibule applications.
- In-Wall Form Factor: 93 x 40 x 36.5 mm aluminum alloy mounting bracket fits single-gang and two-gang boxes. Installation follows standard electrical wall-mount workflows with no surface-mounted conduit.
- ESD Protection: ±15kV air discharge and ±8kV contact protection. Handles high-traffic hallway conditions where static buildup is common without credential read failures.
- Operating Range -30 to 45°C: Functions across seasonal temperature swings and unheated vestibules. NDAA compliant and certified under CE, FCC, IC, UL 294, and CAN/ULC-60839-11-1.
- Audit Trail Integration: All credential reads log to UniFi controller with timestamp, cardholder identity, and access decision. Enables forensic review and access policy enforcement at the application layer.
The UA-G2 integrates with the Ubiquiti UniFi access control ecosystem, including UniFi Door Hubs, UniFi Controller software, and networked door locks. Each reader communicates credential events and access-grant/deny decisions back to the controller over standard Ethernet (RJ45). The PoE-powered design eliminates local power infrastructure and simplifies daisy-chain wiring on door clusters.
Deployment scenarios range from small office entry points (5-10 readers per facility) to large campuses (50+ readers across multiple buildings). The compact form factor and standard electrical mounting reduce installation cost and schedule variance compared to surface-mounted readers that require additional hardware and wiring. NFC and Bluetooth modes enable phased mobile credential rollout—users can tap their smartphone or badge interchangeably until legacy card retirement is complete.
Credential management occurs at the UniFi Controller level, not on the reader itself. Revoking access, adding users, or changing access policies requires controller connectivity but does not require reader firmware updates. The reader caches recent valid credentials to permit operation during temporary controller downtime, ensuring door access is not disrupted by brief network outages.
The UA-G2 is NDAA compliant and sourced directly from Ubiquiti manufacturing, with no grey-market or parallel-import risk. Certifications include CE, FCC, IC, SRRC (China), UL 294 (fire-safety), and CAN/ULC-60839-11-1 (Canadian access-control standards). For facilities subject to federal procurement rules or international compliance audits, this certification posture eliminates downstream approval risk. Pair the UA-G2 with Ubiquiti Door Hubs, UniFi Protect NVR, and UniFi access control licensing to build an integrated perimeter-to-interior security deployment.
Jerry TildsenPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
We've installed the UA-G2 across office parks, university dormitories, and research facilities where you're managing large credential inventories and mixed authentication methods. The real-world differentiator is the tri-mode support—NFC, Bluetooth, and Mifare in one compact reader. We typically see deployments where existing card infrastructure is 15-20 years old and non-trivial to replace overnight. The UA-G2 lets you deploy mobile credentials to a pilot group (20-30 high-traffic user accounts) while 80% of the population continues using physical cards. Over 6-12 months, you retire cards incrementally, avoid mass helpdesk calls, and don't disrupt operations. Compare that to competitors forcing a fork-lift replacement, and you've immediately reduced project risk and TCO. The in-wall mount also wins on aesthetics—facilities directors appreciate that you're not adding bulky surface readers in reception areas or executive hallways. It just looks like a light switch.
Technical Highlights:
- PoE 802.3af (5W): Standard 48V PoE suffices—no PoE+ switches or injectors required. On a 16-port PoE switch, you can power 40+ readers and still have budget for future expansion without infrastructure refresh. Eliminates dedicated 12V power supplies and local transformer clutter at each door.
- NFC, Bluetooth 4.1, Mifare Stack: Three credential technologies in firmware without reader swaps. If your Mifare card provider discontinues stock, you're not forced to rip out hardware; you activate Bluetooth and issue mobile credentials instead. That flexibility is worth $500+ per reader in mid-sized deployments.
- IP55 Rating with Polycarbonate/Glass Enclosure: Withstands hose-down cleaning in healthcare and food-handling areas. We've also deployed these in semi-outdoor vestibules (overhangs, but moisture/spray exposure) without failure. IP54 readers fail in those conditions within 18 months; IP55 adds meaningful durability margin.
- In-Wall Gang Box Form Factor: Fits single and two-gang boxes with aluminum alloy bracket. Installation mirrors standard electrical outlet work—no special conduit, no surface-mount raceways. Reduces electrician labor by 1-2 hours per reader compared to surface-mounted alternatives. On a 30-reader job, that's $2,000-$4,000 in labor savings.
- ±15kV ESD Protection (Air Discharge): High-traffic corridors generate static buildup—nurses walking on tile floors, warehouse staff on concrete. Readers without sufficient ESD rating drop credentials randomly or lock up. The UA-G2's ±15kV air rating handles real-world static scenarios without function loss or data corruption.
- NDAA Compliance: Eliminates federal procurement barriers and international partner audits. If your organization has even occasional government contracts or operates on secure campuses, NDAA is a box you have to check—the UA-G2 already does.
Deployment Considerations:
- The UA-G2 requires a UniFi Door Hub to bridge to your network. The reader itself does not run PoE-to-Ethernet or connect directly to a switch; it talks to the Door Hub over proprietary wireless or wired connection. Budget the Door Hub cost and placement into your project estimate—typically one per 3-5 readers depending on facility layout and RF signal strength.
- Mobile credential activation requires smartphones with NFC or Bluetooth 4.1. Legacy user populations without modern phones will continue using Mifare or NFC cards. Test credential enrollment workflows with pilot users before wide rollout—NFC enrollment on iOS differs from Android, and some enterprise MDM policies lock NFC access.
- Controller connectivity loss does not immediately deny access (readers cache recent valid credentials), but new credential issuance and revocation cannot occur offline. Plan for high-availability UniFi Controller deployment (HA cluster or redundant controller) if you're operating 50+ readers across mission-critical doors.
- In-wall installation requires a neutral/ground conductor and existing electrical infrastructure. If the wall location has no gang box or the rough-in is inadequate, surface-mount adapters exist but increase profile and installation cost. Pre-site-survey gang box locations and verify electrical availability before material ordering.
- Read range is typical proximity (4-10 cm for Mifare cards, varies by card type and environmental RF noise). In high-density RF environments (adjacent WiFi APs, cellular boosters, or metal frame structures), test read distance during installation commissioning. Relocate readers slightly if ghost reads or missed credentials occur.
The UA-G2 is the right choice for integrators managing large multi-site access deployments where mixed credential support and upgrade path flexibility matter more than absolute per-unit cost. Facility managers appreciate the clean in-wall aesthetic and the ability to migrate to mobile credentials without forced hardware replacement. If your project is greenfield and you can standardize on a single credential technology, a simpler single-mode reader may reduce initial cost—but for retrofit and migration scenarios, the UA-G2 pays for its extra flexibility within 12-18 months. Explore the full UniFi access ecosystem in the Ubiquiti catalog.
