SDC 921P Stand-Alone Surface Mount Keypad Controller
Overview
The SDC 921P is a two-piece standalone keypad controller combining integrated proximity reader and external electronics in a surface-mounted package. It supports PIN entry and proximity card authentication for up to 500 users, making it suitable for retrofit installations, remote locations, and single-door or small multi-door deployments that don't require networked infrastructure. Heavy cast metal blue-backlit keys provide tactile feedback and vandal resistance in indoor/outdoor environments.
Compatibility
The 921P operates as a standalone unit and does not require integration with networked access control systems or VMS platforms. It is compatible with proximity credentials (13.56 MHz NFC) and keypad PIN codes (1–6 digits) for credential-flexible deployments. The two-piece design separates keypad input from control electronics, allowing flexible mounting on standard door frames and architectural surfaces. Suitable for retrofit access control projects where minimal infrastructure and local-only operation are requirements.
Installation Notes
Surface-mount form factor installs directly to door frames or adjacent wall surfaces without mortise routing. The two-piece design requires cable runs between the keypad and external control electronics — plan wire routing accordingly. The cast aluminum housing provides IP-rated protection for outdoor mounting. Code length is configurable from 1 to 6 digits; capacity of 500 users means enrollment time and credential management workflows scale modestly before hitting the ceiling on this model.
What's in the Box
- 1x SDC 921P keypad assembly with integrated proximity reader
- 1x external control electronics enclosure
- Mounting hardware and template
