@Wayne-TP , yes I am interested on  a dry relay for sure (should not swich signicant power, the best would be if it could work from battery), the mising of that is the largest disatvantage of Tapo smart device portfolio - I should use Shelly and Tapo parallel because of that gap.  Gate, garage opener are some examples but even if it can swithc small power only it can controll another relay from a thirparty and evrything from that point..)