This request should be renamed to „Eve Energy Smart Plugs“. The device manufacturer recently renamed itself from Elgato to Eve Systems GmbH.
The smart plugs (its actually a plug, not a switch), which are controlled via Bluetooth, are called „Eve Energy“.
The categy „lights“ might also be a bit misleading, as it is not only lights which can be controlled via Eve Energy, instead all devices which are connected to such a smart plug can be switched on or off.
For additional informatio on these devices, please see https://www.evehome.com/en/eve-energy.