The Wyze app has this trigger, “sensor left open” which is different from “sensor opened”. Wyze have already done the hard work , what is left is to amend their list of triggers in IFTTT to include this missing trigger (probably omitted as a typo) . IFTTT can be used to set a custom alarm sound (as Wyze doesnt support different custom sounds)
Many others have already asked for this, it would allow many useful applications: IFTTT alarms for front/garage/fridge doors left open . it could be used to prevent heat/ cooled air from escaping the house, thus lowering electricity bills, or keep your pet from escaping.
please add this to the requested feature list, thanks