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  • Centrios | Relay Expansion Board Add-On for Smart Reader with 2 Extra Relays & 2 Inputs | REB
Relay Expansion Board Add-On for Smart Reader with 2 Extra Relays & 2 Inputs
Centrios

Relay Expansion Board Add-On for Smart Reader with 2 Extra Relays & 2 Inputs

SKU CEN-REB

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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.

Specifications

SKUCEN-REB
BrandCentrios
Form factorWired expansion board add-on for the Centrios Smart Reader
CommunicationWired connection to the Centrios Smart Reader (CER)
Configurable outputs2 additional relays
Inputs3 additional (Door Position Switch, Request to Exit)
Passage-mode overrideOn-board button, no app required
Status indicatorsLED (locking / unlocking status)
Dimensions4.5" x 1.5" x 1" (182.5 x 44.45 x 24.5 mm)
CompatibilityCentrios Smart Reader (CER); can be added to a previously installed CER
EcosystemProprietary to Centrios
IncludedRelay Expansion Board only (compatible Smart Reader sold separately)
Power12-24 VDC (auto-sensing), supplied by the Smart Reader

Documents and resources

FAQs

What does the REB add to a Centrios Smart Reader?
Two additional configurable output relays, three additional inputs (DPS, REX), an on-board button to override passage mode without the Centrios app, and LED indicators of lock/unlock status.
Can it be added to a Smart Reader that's already installed?
Yes. The REB is designed to be wired in during the initial Smart Reader install or added later to a previously deployed CER.
Does it work without a Centrios Smart Reader?
No. The REB is a wired expansion for the Centrios Smart Reader (CER) and requires one to function. For a new install of both, order the CER + REB combo bundle.
Where do I mount the Expansion Board?
The REB is a compact board (4.5" x 1.5" x 1") designed to be terminated on the secure side of the door for maximum wiring flexibility, so connections for electrified hardware don't need to run through the frame back to the reader.
What is the passage-mode override button for?
It lets an authorized user end passage mode at the door without opening the Centrios app on a phone. Useful when a room needs to be manually re-secured on the spot.
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