CasientBook a design consult
For architects · Sydney

Yourvision,deliveredintact.

Casient Keystone is a small DIN-rail unit in the plant-room rack. It joins the KNX bus, learns the building from the ETS project and runs the house locally, working alongside your draughtsperson, electrician and integrator. Every device and finish stays your choice.

Book a design consultWhat the consult covers →
The street frontage of the reference home on Sydney's Northshore, as built
As built · reference home · Sydney Northshore
RCP · LIVING · 1:50ILLUSTRATIVE · NOT TO SCALE ON SCREENBP-01 · BLIND POCKETIN HEAD DETAILLD-01 · LINEAR DIFFUSERDL · DOWNLIGHTPS-01 · PRESENCE SENSORRK-01 · PLANT CUPBOARDVENTILATED · POWER · DATAKP-01+1200 AFFL72004800AB12012 mNPositions are the architect's. Selection is the integrator's.
01Design intent

Your drawings set the rules.

We fit the system to the design. The design is never changed to suit the system.

WallsKeystone adds nothing to the walls. Controls appear only where your drawings place them.
CeilingsSensor positions are marked on your reflected ceiling plan. Flush or surface is selected with the integrator from your finish schedule.
OpeningsBlind pockets and motors are drawn into your head detail. Shading can respond to forecast heat.
BehaviourKNX scenes and lighting levels are programmed to your lighting brief, so rooms feel the way you intended.
No internetThe building keeps running. Only chat and remote access pause. Safety logic stays on the bus.
02The design consult

What the house could do, decided while it is still on paper.

The consult covers what automation makes possible and how it fits your vision. Drawing, wiring and installation stay with your draughtsperson, electrician and integrator. We work alongside them so the intent carries through.

01 · SwitchesWhere a wall switch belongs

Which rooms need one, which can run on presence, and where one keypad can replace a bank of switches.

02 · FunctionsWhat to plan for

The functions each room needs now, and the ones worth allowing for later.

03 · Shade and heatBlinds that respond to heat

How shading can respond to forecast heat, and what that means for the openings.

04 · Warming and coolingWhat the integrator can drive

Which heating and cooling systems the integrator can control, so the services engineer's choice is never limited by the control system.

05 · Fireplace and featuresFireplaces, pools and other features

Which features can join the system, and how they work with the rest of the house.

06 · CompatibilityConfirm before it is ordered

Ask the integrator to confirm each scheduled appliance's control interface before it is ordered.

Who does what
ArchitectControl positions, finishes, plant-space allowance and the lighting brief.
IntegratorSelects devices from your schedule, programs, commissions and hands over.
ElectricianCabling and power, to the drawings.
DraughtspersonDrawings and the specification, with our input if you want it.
CasientKeystone, the building model and the decision log. Supports the integrator.
03Planning for it

Plan every control position on your drawings.

We do not choose the devices. We help you plan the space for them, so the integrator's choices fit the design.

Keypads: Fewer, better-placed controlsIllustrative
KeypadsFewer, better-placed controls

Decide early where people will expect a control, so the integrator can match keypads to your finish schedule.

Sensors: Room in the ceiling planeIllustrative
SensorsRoom in the ceiling plane

Plan the reflected ceiling so sensors can sit beside the downlights and diffusers. Flush or surface is selected with the integrator from your finish schedule.

Equipment: A home for the equipmentIllustrative
EquipmentA home for the equipment

Allow a ventilated plant space at design development, so it is not found on site.

04For your documents

What goes on which drawing, and who owns it.

Where it appears in your drawings

Who shows what, and who is responsible for it.

DrawingShowsOwner
Reflected ceiling planSensor and downlight positionsArchitect places. Integrator selects the device.
Joinery and wall elevationsKeypad positions, plant cupboard, blind pocketsArchitect.
Electrical planCircuits, conduit, data points and the KNX bus routeElectrician, to the drawings.
Plant room and servicesRack position, ventilation, powerArchitect with the services engineer.
Control scheduleWhat each control doesIntegrator, to your lighting and comfort brief.
Commissioning and handoverTest records, decision log, handover packIntegrator, with Casient.

What the plant space needs

  • A dry, ventilated cupboard or room.
  • A power point and a network data point inside it.
  • A route for the KNX bus cable to reach it.
  • Clear front access, with the door swing allowed for.
  • Not in a hot roof space, or an unventilated joinery unit.

If a control moves after documentation

Moving a control after documentation means re-cabling, a new import of the ETS project and an update to the building model. Tell us early. It is far easier before rough-in.

Who is responsible for what

Life-safety systems stay with their certified systems. The integrator is responsible for the control programming. You are responsible for the positions and finishes you specify.

From concept to handover

  1. 01ConceptA consult on what the house could do.
  2. 02Design developmentAllow for positions and plant space.
  3. 03DocumentationWe check the automation intent is clear in your documents.
  4. 04Rough-inCabling to your drawings.
  5. 05CommissioningThe integrator programs and tests.
  6. 06HandoverA pack under the integrator's name, and the decision log.

A specification clause, to start from

Control system. Provide a KNX building control system, programmed by a KNX-certified integrator to the architect's lighting and comfort brief. Control positions and finishes are as scheduled by the architect. The integrator shall confirm the control interface of each scheduled appliance before ordering, provide the plant-space allowance as shown, and deliver commissioning records and a handover pack.

Where we are

One reference home on Sydney's Northshore. Keystone has run there since July 2025, and we are not yet in more. See the numbers →

Specify Casient

Bring Casient into your next project.

Where is the project at?

Book a design consult and bring a current drawing set. We'll show you where Casient fits and what to note in your specification.

Casient · Sydney
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For architects
© 2026
Casient · Sydney, AustraliaKNX is a registered trademark of the KNX Association cv. Casient is not affiliated with, endorsed by or sponsored by the KNX Association.