SDC 920P vs Ubiquiti UA-G3-FLEX-B: Specification Comparison
Both the SDC 920P and the Ubiquiti UA-G3-FLEX-B are wired, outdoor-rated keypad-equipped access control readers designed for door-level credential verification. The 920P is a proximity-plus-keypad reader communicating via OSDP over standard wired connections; the UA-G3-FLEX-B is an NFC/Bluetooth/PIN reader powered by PoE and managed through the UniFi Access ecosystem. Installers evaluating either unit are choosing between a panel-agnostic OSDP reader with HID proximity support and a proprietary-ecosystem smart reader with mobile and Apple Touch Pass credentials.
In This Guide
- What credential types and communication protocols does each reader support?
- How is each reader powered, and what wiring infrastructure does it require?
- How do they compare on environmental ratings, certifications, and system management?
- Which should you choose: the 920P or the UA-G3-FLEX-B?
- Side-by-Side Specs
- FAQ
What credential types and communication protocols does each reader support?
The SDC 920P supports HID-compatible proximity cards and PIN keypad entry, communicating over OSDP — a supervised, encrypted protocol that works with any OSDP-compliant access panel. This makes it panel-agnostic in environments already standardized on HID proximity card programs.
The UA-G3-FLEX-B supports NFC, Bluetooth 4.1, Mifare, Apple Touch Pass, and PIN keypad entry via a 12-button capacitive keypad. It communicates over wired Ethernet to a UniFi controller. No OSDP support is listed in the provided specs, and no HID proximity compatibility is stated.
How is each reader powered, and what wiring infrastructure does it require?
The SDC 920P is wired and communicates over OSDP; its specific power requirements (voltage, current draw) are not stated in the provided specs. Installers should consult the datasheet at /content/product-datasheets/920P.pdf for power input details.
The UA-G3-FLEX-B is powered by PoE 802.3af at 5W, with a voltage range of 44–57V DC over a single RJ45 10/100 MbE port. This eliminates a separate power run; a single Cat cable from a PoE switch or injector covers both data and power. Port and power specs are fully defined in the provided specifications.
How do they compare on environmental ratings, certifications, and system management?
The SDC 920P is rated for indoor/outdoor installation. No operating temperature range, enclosure material, or third-party certifications (UL, FCC, CE) are listed in the provided specs. Management is handled through whatever OSDP-compatible panel it is connected to. The warranty is stated as Lifetime.
The UA-G3-FLEX-B carries an operating temperature rating of -30 to 60°C, a polycarbonate/glass/aluminium alloy enclosure, and certifications including CE, FCC, IC, UL 294, and CAN/ULC-60839-11-1. It is managed through the UniFi Access application. The warranty is listed as Manufacturer Warranty with no duration stated in the provided specs. NDAA compliance is noted as confirmed.
Which should you choose: the 920P or the UA-G3-FLEX-B?
Our take: The 920P is the stronger choice when the deployment runs an OSDP-compatible panel with an existing HID proximity card program and requires a panel-agnostic reader with a Lifetime warranty. The UA-G3-FLEX-B is the stronger choice when the site is built on UniFi Access infrastructure and mobile or Apple Touch Pass credentials are required. Key spec deltas: the UA-G3-FLEX-B lists a -30 to 60°C operating range and UL 294 / FCC certifications — neither figure is available for the 920P. The 920P supports up to 500 users stored on-device; no equivalent local user-capacity figure is provided for the UA-G3-FLEX-B. The UA-G3-FLEX-B's PoE 802.3af power at 5W simplifies wiring; the 920P's power input specs are not stated. Neither reader is a substitute for the other across mixed-ecosystem sites.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | SDC 920P | Ubiquiti UA-G3-FLEX-B |
|---|---|---|
| Product Type | Proximity + Keypad Reader | NFC + Keypad Reader |
| Credential Types | HID proximity, PIN keypad | NFC, Bluetooth 4.1, Mifare, Apple Touch Pass, PIN keypad |
| Communication Protocol | OSDP | Wired Ethernet to UniFi controller |
| Connectivity | Wired | Wired Ethernet (RJ45 10/100 MbE) |
| Power Method | — | PoE 802.3af |
| Power Consumption | — | 5W |
| Voltage Range | — | 44–57V DC |
| Max User Capacity | 500 users | — |
| Environment Rating | Indoor/Outdoor rated | Outdoor (weatherproof) |
| Operating Temperature | — | -30 to 60°C |
| Enclosure Material | — | Polycarbonate, glass, aluminium alloy |
| Certifications | — | CE, FCC, IC, UL 294, CAN/ULC-60839-11-1 |
| NDAA Compliant | — | Yes |
| Mobile Credential Support | — | NFC: iOS, Android; Apple Touch Pass |
| Management | Via OSDP-compatible panel | UniFi Access application |
| Warranty | Lifetime | Manufacturer Warranty (duration not specified) |
Frequently Asked Questions
Which should you choose: the 920P or the UA-G3-FLEX-B?
The 920P is the stronger choice when the deployment runs an OSDP-compatible panel with an existing HID proximity card program and requires a panel-agnostic reader with a Lifetime warranty. The UA-G3-FLEX-B is the stronger choice when the site is built on UniFi Access infrastructure and mobile or Apple Touch Pass credentials are required. Key spec deltas: the UA-G3-FLEX-B lists a -30 to 60°C operating range and UL 294 / FCC certifications — neither figure is available for the 920P. The 920P supports up to 500 users stored on-device; no equivalent local user-capacity figure is provided for the UA-G3-FLEX-B. The UA-G3-FLEX-B's PoE 802.3af power at 5W simplifies wiring; the 920P's power input specs are not stated. Neither reader is a substitute for the other across mixed-ecosystem sites.
Is the 920P or UA-G3-FLEX-B compatible with third-party access panels?
The 920P communicates via OSDP, which is an open, industry-standard protocol supported by many third-party panels. The UA-G3-FLEX-B connects over wired Ethernet to a UniFi controller; no OSDP support is listed in the provided specs, indicating it is designed for use within the UniFi Access ecosystem.
Which reader supports mobile or smartphone-based credentials?
The UA-G3-FLEX-B lists NFC (iOS and Android), Bluetooth 4.1, and Apple Touch Pass as supported credential types. The 920P's provided specs list only HID proximity cards and PIN keypad — no mobile or NFC credential support is stated.
Which unit has stronger certifications for outdoor or regulated installations?
The UA-G3-FLEX-B lists CE, FCC, IC, UL 294, and CAN/ULC-60839-11-1 certifications along with a -30 to 60°C operating temperature range. The 920P is described as outdoor-rated, but no third-party certifications or temperature range are provided in the available specifications.
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