After consultation, I was told that if you want to use a monitor as a TV, you must use a receiver like the following: https://www.digitec.ch/de/s1/producttype/tv-receiver-515?tagIds=538-545 . If you already have a receiver from Swisscom, for example, you can simply connect the monitors to it. You can use your favourite monitor for this. :)
Yes, it works very well: the monitor is hooked to the stand with a snap lock at the back, as with most LCDs, and the base is mounted with a retractable thumbscrew (requires no tools).