SDC 802ALN OSDP Proximity Keypad Controller

Overview

The SDC 802ALN is a wired controller built to bridge NFC 13.56MHz proximity credentials and keypad PIN entry into an OSDP-based access control system. It sits at the reader end of the wiring run, handling credential capture and passing data upstream over the OSDP protocol rather than legacy Wiegand — the detail that matters if your head-end panel is standardized on OSDP for its stronger encryption and support for bidirectional reader communication (LED/beeper control, firmware updates over the wire). Use it where you need dual-credential flexibility at a single door: card-only, PIN-only, or card-plus-PIN for higher-security openings.

Compatibility

As an OSDP device, the 802ALN integrates with access control panels and controllers that support the OSDP v2 communication standard — the specification governs the pairing, not a fixed model list, so confirm your head-end panel's OSDP support before wiring. It reads 13.56MHz NFC proximity credentials, which covers most current commercial smart-card formats operating at that frequency; it will not read legacy 125kHz proximity cards, so audit your existing credential stock before swapping in a 802ALN on a door that currently runs older low-frequency cards.

Installation Notes

This is a wired reader/controller, not a wireless or battery unit — plan a home-run or OSDP daisy-chain cable path back to the panel rather than relying on a standalone power source. Because it combines proximity and keypad reading in one housing, mount it where both a card presentation surface and keypad access are usable at typical hand height, and terminate per your panel manufacturer's OSDP wiring diagram (polarity and termination matter more on OSDP runs than on simple Wiegand pulls). Model 802ALN carries a lifetime warranty, which is worth factoring into total cost of ownership on a door you expect to keep in service for years.