Ubiquiti Retrofit Reader - UA-Retrofit-Reader-B
| Manufacturer SKU | UA-Retrofit-Reader-B |
|---|---|
| Manufacturer | Ubiquiti |
Ubiquiti UA-Retrofit-Reader-B door access reader for UniFi Access Retrofit. Modernize legacy card reader installations using existing wiring, with NFC cards and mobile access support. Requires UniFi Retrofit Hub.
Accessories and add-ons:
Ubiquiti UA-Retrofit-Reader-B (Retrofit Reader)
Ubiquiti UA-Retrofit-Reader-B is an access control reader designed for retrofitting existing door access installations where legacy card readers were previously used. The device works exclusively with UniFi Access Retrofit hubs and allows reuse of existing cabling without the need to install new wiring.
The Retrofit Reader functions as a user identification reader and is used to unlock doors within the UniFi Access system. Once physically connected and powered, it is automatically discovered and paired with the Retrofit Hub in the UniFi Access application. The reader does not operate independently and requires a connection to a compatible UniFi Retrofit Hub.
The device supports user identification via NFC cards and key fobs, as well as mobile access features provided within the UniFi Access ecosystem. Configuration, permission assignment, and user management are handled centrally through the UniFi Access application.
Main features
- Access control reader for the UniFi Access Retrofit system
- Support for NFC cards, key fobs, and mobile access
- Integration with Apple Wallet and Google Wallet
- Wired RS-485 communication and BLE connectivity
- IP55-rated enclosure for indoor and outdoor use
- Automatic discovery and pairing with UniFi Retrofit Hub




Technical specifications
| Model | UA-Retrofit-Reader-B |
| Dimensions | 117 × 45 × 13.3 mm |
| Weight | 82 g |
| Enclosure material | Polycarbonate, aluminum alloy |
| Mount material | Stainless steel |
| Ingress protection | IP55 |
| Application | Indoor and outdoor use |
| NDAA compliance | Yes |
Identification and access
| NFC card and key fob access | Yes |
| Apple / Google Wallet | Yes |
| Mobile unlock | Yes |
| NFC frequency | 13.56 MHz |
| NFC read range | < 30 mm |
| NFC technologies | ISO 14443A, ISO 14443B, ISO 15693 |
| Supported NFC tag types | Tag 1, 2, 3, 4, 5; MIFARE Classic; MIFARE Plus; MIFARE Ultralight; MIFARE DESFire |
Connectivity and security
| Connectivity | RS-485, BLE 4.1, NFC |
| Security standard | OSDP v2 |
| ESD / EMP protection | Air: ±15 kV, contact: ±8 kV |
Power
| Power method | DC 12 V |
| Supported voltage range | 12 V DC |
| Maximum power consumption | 2.5 W |
Device elements
| Speaker | Yes |
| LEDs | R / G / B / W |
| Button | 1 × factory reset |
Mounting
| Mounting method | Wall mount, gang-box mount (included) |
| Junction box | Optional |
Environmental conditions
| Operating temperature | -30°C to 50°C |
| Operating humidity | 5% – 90% (non-condensing) |
Software and certifications
| Management application | UniFi Access |
| Software information | Software version available at https://unifi.ui.com |
| Certifications | CE, FCC, IC |


UniFi Retrofit Reader – Frequently Asked Questions (FAQ)
No. The Retrofit Reader only works with the Retrofit Hub.
Connect the Retrofit Reader according to the provided RS-485 wiring instructions. It must be connected directly to the designated ports on the .
Yes. You can daisy-chain up to two Retrofit Readers per door.
Please note that daisy-chaining is only available for UniFi Retrofit Readers. Wiegand readers are not supported.
| Manufacturer SKU | UA-Retrofit-Reader-B |
|---|---|
| Manufacturer | Ubiquiti |
| GPSR contact | Ubiquiti International Holding B.V. Ekkersrijt 3102, 5692 CC Son en Breugel support@ui.com |






















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