0-10V is a simple analog dimming method that controls groups of lights with a varying voltage signal. DALI is a digital protocol that addresses each light individually, supports scenes and groups, and reports faults back to the system. 0-10V is cheaper and suits basic zone dimming. DALI costs more but offers far greater control and flexibility.

An office floor is wired and dimming works. Six months later, the team moves desks and wants the lights regrouped. With one system, that’s a few clicks in software. With the other, it means an electrician, new wiring and a ceiling opened up again.

That’s the real difference between DALI and 0-10V. Both dim LED lights well. Only one stays flexible after installation. This guide explains how each works, what they cost and which suits your project.

Who is this guide for?

• Office, hotel and retail owners planning dimmable lighting
• Architects and MEP consultants specifying lighting control
• Villa and luxury home owners choosing between dimming systems
• Facility managers upgrading existing commercial lighting

What is 0-10V dimming?

0-10V is an analog control method where a low-voltage DC signal between 0 and 10 volts tells the LED driver how bright the light should be.

At 10V the light runs at full output, and as the voltage drops, the light dims. It needs two extra control wires alongside the power wires, and every driver connected to the same control wires dims together as one zone.

A closely related version, 1-10V, is common in IEC markets including India. It works the same way, with 1V as minimum brightness. In both, switching the light fully off usually needs a separate relay, because the minimum signal dims rather than switches off.

What is DALI?

DALI (Digital Addressable Lighting Interface) is an international digital lighting control standard that gives every driver its own address, so each light can be controlled individually.

Defined under IEC 62386 and maintained by the DALI Alliance, DALI uses a two-wire control bus. A single DALI line typically supports up to 64 drivers, which can be organised into up to 16 groups and up to 16 scenes per device. Crucially, DALI is two-way: drivers can report their status and faults back to the system.

DALI-2, the newer version, adds certified interoperability between brands and standardises input devices like sensors and push buttons. Read our DALI lighting guide for a deeper explanation.

What are the key differences between DALI and 0-10V?

The biggest differences are individual addressing, two-way communication and how easily lighting can be regrouped after installation.

How much do DALI and 0-10V systems cost?

0-10V is cheaper upfront because drivers and controllers are simpler, while DALI costs more because of digital drivers, bus power supplies, gateways and programming.

Indicative estimates only, not actual quotes.

For a small project with a few zones, 0-10V is usually more economical. On larger projects with many zones, sensors and frequent layout changes, DALI often costs less over its lifetime, because changes don’t need rewiring. For full system pricing, see our lighting control system cost guide.

When should you choose 0-10V?

Choose 0-10V when you need simple, reliable zone dimming on a limited budget.

• Small offices, shops and restaurants with a few lighting zones
• Projects where the layout is unlikely to change
• Retrofits where existing drivers are already 0-10V or 1-10V
• Spaces that only need basic dimming, without scenes or monitoring

When should you choose DALI?

Choose DALI when you need individual control, scenes, sensors, monitoring or the freedom to change layouts later.

• Offices with flexible seating and daylight-linked dimming
• Hotels, where lobbies, corridors and rooms need different scenes
• Retail and showrooms that change displays frequently
• Luxury villas wanting precise, flicker-free dimming
• Buildings where lighting must integrate with KNX or a building management system

DALI also integrates with KNX through gateways, so one keypad can control DALI lights alongside curtains and climate. See our ABB DALI gateway guide.

At Brightmatic, we often recommend DALI for commercial projects above a few thousand square feet, because the flexibility pays for itself the first time the layout changes.

Not sure which suits your project? Share your drawings for a recommendation →

Is DALI worth the extra cost?

• Is it expensive? Per driver, yes. Over a building’s life, often not, because changes are made in software instead of with new wiring.
• Is it complicated? Installation needs addressing and programming, but day-to-day use is simple.
• What can go wrong? Mixing non-certified devices, poor addressing records and no handover documentation.

What mistakes should you avoid?

1. Mixing DALI and 0-10V drivers on the same circuit without a plan
2. Forgetting the relay needed to switch 0-10V lights fully off
3. Ignoring voltage drop on long 0-10V control runs
4. Choosing cheap drivers that flicker at low dimming levels
5. Skipping DALI addressing documentation at handover
6. Choosing 0-10V for spaces that will clearly be reconfigured

A common myth: DALI is only for huge commercial buildings. In reality, it is increasingly used in luxury homes and boutique hotels where smooth, precise dimming matters.

Expert recommendation from Brightmatic

For small, fixed-layout spaces, 0-10V or 1-10V dimming is a sensible, economical choice. For offices, hotels, retail and luxury residences, we recommend DALI-2 certified drivers, combined with presence and daylight sensors, and integrated with KNX where whole-building control is needed.

Whichever you choose, decide before wiring begins. Control wiring is the hardest thing to change later.

Brightmatic designs and installs DALI, 0-10V and KNX lighting control systems, with components from brands like ABB. 

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Brightmatic designs and installs lighting control for offices, hotels, retail spaces and luxury homes in Noida, Delhi NCR & across India.

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Originally Published at: https://www.brightmatic.in/insights/dali-vs-0-10v-lighting-control