You're welcome - if your parents would like to use it to watch the SRF programmes, I recommend, as mentioned above, to obtain a UHD-capable satellite receiver because of the future security, e.g.
TechniSat DIGIPLUS UHD S (DVB-S, DVB-S2)

Good device but I would recommend only buying devices that are UHD-capable (HECV265) because Swiss television will only broadcast in this standard from the year after next.