No, this has a battery.
If the two wires from the module are short-circuited via a connected wall switch contact, there is a Hue signal.
I do not recommend exposing these wires to a voltage of 230V as the insulation is not suitable for this.
The 230V wires previously switched with the switch must be short-circuited so that there is continuous voltage on the lamp.

In terms of safety, this intervention in the electrical installation should be carried out by a licenced specialist, as is the case with any lamp installation. So that this is also mentioned.

merci, the description in this article is wrong, it says connection to mains.

No, the module must not be connected to the 230VAC wires! The wires connected to the switch - button must be disconnected, the "lamp wire must be connected to the phase so that the Hue lamp is always supplied with voltage. Then connect the module ( battery powered ) to the terminals of the switch. The configuration can be set as a button or switch input in the app. If you don't understand anything about electrics, please call an electrician!
Link Philips : https://www.philips-hue.com/de-ch...