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Essential knowledge about Casambi technology — an advanced BLE Mesh wireless lighting control system...
DALI-2 and Casambi BLE Mesh are the two most widely used professional lighting control protocols today. This article provides a technical breakdown, compares their strengths and limitations, and offers a project-type decision framework for System Integrators and M&E engineers.
Tapi Dashboard is a unified web-based building control platform that lets you manage Casambi, KNX, Matter, Sensibo and Homey devices from a single real-time interface. This article covers how it works, what protocols it supports, and how to try the live demo today.
BLE Mesh (Bluetooth Low Energy Mesh) is a wireless mesh networking protocol standardized by the Bluetooth SIG in 2017, enabling hundreds of devices to communicate in a multi-point network without a central hub. This article explains how BLE Mesh works, how it differs from standard BLE and Zigbee, and why Casambi chose this protocol as the foundation for commercial smart lighting.
Casambi is a wireless lighting control system using Bluetooth Low Energy Mesh technology, enabling full control of a lighting network via smartphone without a central hub or dedicated control cabling. This article explains how Casambi works, compares it with DALI-2 and KNX, and helps you assess whether Casambi is the right fit for your project.
Essential knowledge about Casambi technology — an advanced BLE Mesh wireless lighting control system for commercial and residential projects.
Casambi is a wireless lighting control system built on Bluetooth Low Energy Mesh (BLE Mesh) technology, standardized by the Bluetooth SIG. It enables full control of a lighting network via smartphone or tablet without a central hub, without dedicated control cabling, and without proprietary programming hardware.
This is the fundamental difference from traditional protocols. KNX and DALI-2 require bus couplers, DALI power supplies, or central controllers. With Casambi, each end device handles its own mesh logic, self-routes signals, and self-heals when any node in the network loses connection.
BLE Mesh is a multi-point wireless mesh protocol standardized by the Bluetooth SIG in 2017, supporting hundreds of devices communicating within a single network. Casambi builds proprietary firmware on this foundation, optimized for commercial and residential lighting applications.
Each Casambi device, whether a CBU-ASD module with DALI interface or a CBU-TED for 0-10V signals, acts as both a command receiver and a relay node forwarding signals to neighboring devices. Practical range between adjacent nodes is typically 10 to 15 meters, sufficient to cover open-plan offices or multi-floor hotel corridors.
| Criteria | Casambi | DALI-2 | KNX TP | Zigbee |
|---|---|---|---|---|
| Connection | BLE Mesh (wireless) | 2-wire bus (wired) | TP bus (wired) | IEEE 802.15.4 (wireless) |
| Hub/Controller | Not required | DALI controller required | KNX IP router required | Zigbee coordinator required |
| Dedicated control cable | No | Yes (DALI bus 2-wire) | Yes (KNX TP cable) | No |
| Devices per network | Up to 250 nodes | 64 addresses per line | Up to 57,375 addresses | Up to 65,000 nodes |
| Configuration tool | Casambi app (iOS/Android) | DALI commissioning tool | ETS (dedicated software) | Vendor-specific |
| BMS integration | Via Casambi Gateway (BACnet/IP, Modbus TCP) | Native integration | Native integration | Via hub/gateway |
| Limitation | End-device cost higher than standard DALI | Requires dedicated DALI bus wiring | High cost, requires ETS engineer | Not optimized for commercial lighting |
Casambi is best suited for projects where running dedicated control cabling is structurally difficult or cost-prohibitive, or where high flexibility in scene configuration post-construction is required.
Boutique hotels and resorts: zone-based scene control without fixed control panels
Serviced offices and coworking spaces: zone reconfiguration when tenants change, without touching the electrical infrastructure
Restaurants and F&B venues: multiple scene presets by time of day via app
Museums and galleries: track lighting per display position, easily reconfigured when layout changes
High-end residences: owner self-configures via app without requiring a technician
CBU-ASD: module with DALI interface, for luminaires with DALI-input drivers
CBU-PWM: PWM output control module, commonly used for LED strips
CBU-TED: 0-10V interface module, compatible with legacy analog drivers
CBU-DCS: direct mains output control module, for lamps without a driver
Casambi Gateway: hardware bridge connecting BLE Mesh to IP infrastructure, supporting BACnet/IP and Modbus TCP
Casambi-Ready luminaires: luminaires with Casambi module pre-integrated by the manufacturer
Over 300 lighting manufacturers worldwide carry Casambi Ready certification, including Osram, Tridonic, Helvar, Glamox, and iGuzzini.