Lighting controls are the point where a good scheme either delivers or disappoints. The fittings may be specified well, the layouts are coordinated, and the optics are correct on paper. But if the controls strategy is treated as an afterthought, the scheme rarely performs the way a designer intended.

From our experience at Detail Lighting, when controls are considered early in the design stages they become one of the most powerful tools an architect, contractor, developer or interior designer has. It means a scheme behaves the way it was intended, the client gets the flexibility they expect, and the space performs as the renders suggested it would.

Here we will discuss what specifiers need to know about controls, how Casambi fits into a specification, and why these decisions belong at the start of a project, not the end.

Why controls decisions matter early

Lighting controls should be considered as part of a design concept. They determine how a space behaves across the day, how the scheme responds to changing use, and how the client experiences the environment long after handover. Decisions about dimming, zoning and scenes shape the fittings you choose, the drivers you specify and the wiring strategy the contractor needs to deliver.

Left to the end of a project, it isn’t uncommon for controls to be selected based on whatever is cheapest and quickest to wire in. That usually means a flat on/off switch across zones that were intended to be dimmed, or generic drivers that cannot hold a low dim level without flicker.

Compatibility issues then surface during commissioning, when the cost and programme implications of remedial changes are at their worst. So define the control strategy at concept stage, coordinate it with the M&E consultant or the electrical contractor during design, and commission it properly at the end, to increase your chance of a successful project.

What Casambi is and how it works

Casambi is a Bluetooth low energy wireless control system, operating on the 2.4 GHz band. Unlike wired systems such as DALI or 1-10V, it does not require dedicated control cabling.

It works by embedding a small module into the fitting or driver, which then communicates with other fittings in a local mesh network of up to around 250 nodes per network. The system is commissioned through an app on a phone or tablet, with no central controller or gateway required for basic operation.

One of the reasons Casambi is selected on many lighting specifications is that it works alongside existing protocols rather than replacing them. It works alongside the main control standards already used in the lighting industry, including DALI, 0 to 10 V, PWM, DMX and relay switching. In practice, that means a single scheme can combine different fitting types on different protocols and still be controlled as one system. Linear profiles, LED tape inside joinery and a decorative pendant can all sit on the same Casambi network and respond to the same scene, even though each is driven differently behind the scenes.

Another benefit of Casambi systems is that in most existing buildings, the wiring is already in place and re-wiring is either disruptive, expensive, or simply not possible within the project scope. Casambi sits on top of existing wiring and makes it intelligent. A flat single-circuit layout can be zoned, scened and dimmed without any structural disruption. For period properties, listed buildings and occupied refurbishments, that matters considerably.

Also, it offers flexibility in new build developments. On a fit-out where the end use may evolve, or where tenants need to adjust the lighting themselves, a wireless mesh removes the need to predict every future requirement in the wiring design. Zones can be redrawn in software and scenes can be added or changed as the space is used.

Casambi is also well suited to applications where controls are often forgotten altogether. Joinery lighting is a common example. A display unit, back-bar or reception desk often gets its lighting added late, wired back to an accessible spur, and left on a simple switch. With a Casambi-enabled driver, the same installation becomes dimmable, programmable and part of a wider scene without needing a separate control line back to the panel.

Commercial display environments benefit in a similar way. Retail, showroom and hospitality spaces often need the lighting look to change through the day, across seasons or for specific events. A scene-based approach lets the space be adjusted by staff without a lighting engineer on site.

Scene setting, zoning and dimming compatibility

Scene setting is where a lot of designers see the value of controls, but it is also where specifications tend to be vague. A scene is a preset combination of levels and zones, recalled with a single command. It only works if three things are right – zoning, dimming compatibility, and integration with the wider lighting scheme.

Zoning needs to reflect how the space is actually used, not just how it is wired. A restaurant that serves breakfast, lunch and dinner needs at least those three scenes, plus cleaning and transition states. A workplace needs a task scene, a meeting scene and a presentation scene at a minimum.

Dimming compatibility is where projects most often struggle. Drivers, control protocols and fittings need to be matched. A driver that claims 1 to 100 percent dimming on its datasheet may only deliver smooth performance down to 10 percent in practice, depending on the protocol and the load. Getting this right means selecting the fitting, the driver and the control module as a single system, not three separate purchases. Integration with the wider scheme is the final piece. Decorative fittings, linear profiles, recessed downlights and architectural uplighting should behave as one coordinated system. That is a coordination task that sits between the lighting designer, the M&E consultant and the electrical contractor.

What this means in practice

A specifier who wants controls to work properly on a project needs three things in place from early in the design stages. A clear strategy for scenes and zones, defined alongside the architecture. A compatible fitting and driver combination for every circuit that needs to dim. And a commissioning plan with named responsibility.

This is where having a lighting partner involved from concept to commissioning changes the outcome. Detail Lighting brings over 25 years of project experience across residential, hospitality and commercial environments, and the cross-sector judgement that comes with it.

Our in-house design team coordinates the scheme with the fittings, the drivers and the control strategy together, and stays involved through to site support and final commissioning. It is often the difference between a scheme that performs on paper and one that performs in the space.

Come and talk lighting controls at Clerkenwell Design Week

Detail Lighting is exhibiting at Clerkenwell Design Week 2026, from 19 to 21 May, at Stand L15a in the House of Detention (12 Sans Walk, EC1R 0AS) alongside the wider Light exhibition.

If you want to discuss controls, see Casambi in action or talk through how lighting integration could work on your next project, the team will be on hand. They will be demonstrating scene setting, dimming control and how Casambi fits into a coordinated lighting scheme.

To arrange a meeting or find out more, contact Detail Lighting on 01908 613 256 or email sales@detaillighting.co.uk