The Centrios Relay Expansion Board (REB) is the wired add-on that extends a Centrios Smart Reader (CER) with two more configurable output relays, two more inputs, an on-board passage-mode override button, and LED status indicators. Wire it in during the reader install, or add it later to a CER that's already deployed.
Where this fits
Openings where the two relays and two inputs on the Smart Reader run out fast: an auto-operator plus a second lock, a monitored DPS plus a REX plus additional sensor logic, or an installer who wants to terminate connections on the secure side of the door instead of running wire through the frame back to the reader. The REB gives the CER room to breathe on more complex openings.
Key features
- 2 additional configurable output relays for more wiring options
- 3 additional inputs (Door Position Switch, Request to Exit)
- On-board passage-mode override button: end passage mode from the door without the Centrios app
- LED visual indicators of locking and unlocking status
- Add anytime: can be wired into a previously installed Smart Reader
- Dimensions: 4.5" x 1.5" x 1" (182.5 x 44.45 x 24.5 mm)
How to buy it
The REB requires a Centrios Smart Reader (CER) to function. Ordering both for a new install? Grab the CER + REB combo to bundle the two units in one purchase.
What does the REB add to a Centrios Smart Reader?
Can it be added to a Smart Reader that's already installed?
Does it work without a Centrios Smart Reader?
Where do I mount the Expansion Board?
What is the passage-mode override button for?
Spec Sheet
