The Answer
The Short Answer
Separate the power path from the command path. Smart bulbs generally need power to receive network commands, while a scene controller can send on/off, dimming, or scene instructions without interrupting that supply. Product behaviour after power restoration and support for detached modes are model-specific, so check the exact documentation.
The Full Explanation
What Happens When Power Is Removed
An unpowered bulb cannot receive app, voice, sensor, or automation commands. Its state after power returns depends on the model and settings. A load-controlling switch is therefore appropriate only when that power-cycle behaviour is acceptable or the controlled lamps are not smart bulbs.
Compatible Wall-Control Options
A supported scene controller, system-specific in-wall module, or documented detached-relay mode can keep smart bulbs powered while issuing digital commands. Verify the exact feature, firmware, platform, load, and wiring requirements rather than assuming every smart switch offers this behaviour.
Installation and Electrical Safety
An in-wall module changes fixed wiring and must follow the manufacturer's instructions and applicable local electrical rules. Philips Hue's own guidance says electrical devices should be installed by electrically skilled people. Use a competent installer where required, and do not exceed stated load or enclosure limits.
Related Questions
Sources
- 1Philips Hue In-Wall Guide
Philips Hue
- 2Philips Hue Wall Switch Module
Philips Hue
- 3Electrical Safety: Approved Document P
UK Government