DALI vs Casambi Selector
Navigate the most debated topic in modern lighting control. Answer four critical engineering questions to determine the optimal control topology for your project.
Control Topology Selector
DALI vs Casambi interactive decision engine
What is the structural nature of this project?
The Great Debate
M&E engineers and architects constantly debate whether to pull DALI cables or rely on wireless mesh for retrofits and new builds. The answer is rarely black and white; it depends entirely on the specific friction points of the project.
The Case for Casambi (BLE Mesh)
Casambi Bluetooth Mesh treats lighting control like a modern IT system. It is decentralized, meaning every node holds a copy of the network logic. For retrofits, particularly in Singapore's conservation shophouses, Casambi is indispensable because it avoids the invasive hacking required to lay copper DALI control wires. RF attenuation through reinforced concrete can be mitigated by high-density node placement.
The Case for DALI-2 (IEC 62386)
DALI-2 (IEC 62386) is an open, wired protocol that provides rock-solid, bidirectional communication. It evaluates bus topology parameters—supporting 64 short addresses, 16 groups, a 250 mA current limit, and 300m maximum run length at 1.5 mm². It is heavily favored in large-scale commercial towers that require deep integration with KNX or BACnet building management systems, particularly for strict compliance with IEC 62386-202 specifications for automated emergency lighting battery and function testing.
The Future: Hybrid Integration
As a Casambi 4C Certified Partner, Illum-Tec often deploys Hybrid topologies. We utilize standard DALI-2 drivers at the luminaire level for smooth, deep dimming, but connect them using Casambi wireless gateways (like the Salvador controllers). This eliminates the vulnerability and cost of long, centralized data cable runs while maintaining professional performance.
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Frequently Asked Questions
Why choose Casambi over DALI?
Casambi is heavily favored for retrofits and heritage buildings because it entirely eliminates the need to pull heavy, invasive copper control cables. Furthermore, its decentralized Bluetooth Mesh architecture ensures there is no “single point of failure” like a central DALI controller hub.
When is wired DALI-2 strictly required?
Wired DALI-2 remains the gold standard when a project demands strict compliance with automated emergency lighting testing (IEC 62386-202) where battery health must be reported to a centralized Building Management System (BMS).
What is a Hybrid Topology?
A Hybrid Topology utilizes the best of both worlds. Localized clusters of fixtures are wired via DALI for robust power and emergency testing, but these clusters are linked together wirelessly using Casambi Gateways (like the Salvador series), eliminating the need for long, vulnerable central data runs across the building.