Fotek ssr-40 DA solid state relay. Can be controlled via the 7-pin connector at the backside of the controller (connect the contact 3rd from the right to the relay input + contact, and connect the ground namely most right one as the relay input – contact). Can also be controlled with the P3 contacts in the inside of the controller
A 220v cable can then be interrupted at one of it’s leads (live or neutral)
An IEC 60320 C13 female connector is provided; and backplate to integrate it. One can for instance use that connector together with a cable like this: https://www.amazon.fr/NAME-Adaptateur-IEC-CEE7-femelle/dp/B01DGL0TG4 to control a 220V controller and put the relay somewhere neatly away.