For some time now, it has been possible to define in the lamp settings in the Hue app what should happen after the lamps lose power and are then switched on again. Should the Hue lamp light up in the last setting? Should it stay off if it was off? Or continue in standard white?
Actually, this setting is intended for power outages. However, many users also use the option to de-energise their smart light bulbs with a classic light switch and switch them on again in a specific light setting. However, this can lead to problems, as an email from Hueblog reader Ali shows:
I have made all the settings accordingly and when I switch on the lamp, the last setting also comes back. But when I switch the light off and on again afterwards, the lamp lights up with standard white. Why does it no longer work the second time with the switch-on behaviour?
My answer to this concern is: “It's Not a Bug, It's a Feature”. The behaviour described here is indeed intentional and can be illustrated very well with a small example.
Imagine that there is an emergency in your home and you have selected the switch-on behaviour so that it retains the last setting. Possibly heavily dimmed so that it remains dark in the room when rescue workers flick the light switch. Their natural reaction? The light switch is flicked one or two more times. And it is precisely with this rapid sequence that the standard white is switched on again.
Certainly, this should only happen extremely rarely in most households. But if the worst comes to the worst, this behaviour is extremely important.
The Hue wall switch module is a very good solution
In general, I cannot recommend switching a smart ceiling light off and on with the classic light switch. After all, the Hue lamps are no longer accessible when they are disconnected from the power. Control by voice and app or by automation, perhaps also with the new Mimic Presence, are then no longer possible.
Meanwhile, it is no longer a big challenge to convert classic light switches and make them smart. With the Philips Hue wall switch module, this can be done within a few minutes. The module is already available in stores for a good 30 euros.