Aiphone ACS-IO - AC Series ACS I/O Starter Kit

The ACS-IO kit starts with eight relays and eight inputs. Add up to seven AC-IOE expansion boards and it scales to 64 inputs and outputs. Each board covers up to 16 unmanaged doors, handling door contacts, request to exit, and motion, with those actions scheduled and assigned.

There are two Wiegand inputs on the board, so two readers land directly on the ACS-IO. Beyond that pair, the remaining capacity is dry contact input and relay output, which is what drives strikes, monitors door position, and takes request-to-exit and motion signals.

Listed to UL 294 and ULC S319-05, the standards for access control system units in the US and Canada. It is also stated NDAA and TAA compliant, which is what government and federally funded institutional buyers need on the submittal.

AC-IOE expansion boards. Up to seven of them can be added to the ACS-IO starter kit, each contributing eight solid state dry contact relays and inputs, which brings the system to 64 inputs and outputs total.

No - it is an I/O control board kit, not a reader. The Aiphone ACS-IO provides two Wiegand inputs, eight solid state dry contact relays and inputs per AC-IOE board, door contact, request-to-exit and motion input handling, in a steel enclosure. Readers are wired to it through the Wiegand inputs and specified separately. The Codelocks A3 dual standalone door controller is the one that carries RFID credential reading as part of the unit. So if you are pricing a job where the credential reader must come in the same box, those are not interchangeable items; with the ACS-IO you are buying the panel and choosing Wiegand readers to match.

The Aiphone ACS-IO starter kit is stated as NDAA and TAA compliant and is UL 294/ULC S319-05 listed, which is the combination most government and institutional specifications call for on access control hardware. It is a commercial-duty product. The Codelocks A3 dual standalone door controller with RFID, in the A3 Door Controllers series, is the standalone alternative in the same decision, but if your spec sheet calls out NDAA and TAA compliance by name, the ACS-IO is the one that states it.

It is a commercial-grade electronic access control unit in Aiphone's AC Series, built into a steel enclosure. This is panel-level equipment for a multi-door building, not a residential or single-opening product.

Depends on how many doors and whether you want central scheduling. The ACS-IO is a centralized board: eight relays and inputs out of the box, 64 with expansion, with scheduled and assigned actions across up to 16 unmanaged doors per board. If you only have one or two openings and no head-end, a standalone unit at the door makes more sense, like the Codelocks A3 Dual Standalone Door Controller with RFID in black finish, which mounts and operates on its own.

Likely yes, in architecture terms. The Aiphone ACS-IO is a starter kit sized for growth: eight relays and eight inputs at the base, expandable to 64 inputs and outputs with seven AC-IOE expansion boards, and it lands in a 19-3/8 by 13-5/8 by 3 inch steel enclosure that needs wall space and 1-1/8 inch or 2 inch conduit runs. For a straight two-door opening with no expansion planned, the Codelocks A3 dual standalone door controller with RFID covers two doors in a standalone package with the credential reader function included. The trade-off is that the standalone route does not give you the scheduled input assignments, request-to-exit and motion inputs, or the UL 294/ULC S319-05 listed panel that the ACS-IO provides.