Unless there is an alternate source such as a generator, Mercator Ikuü products (like any electrical product), will not be useable until power is restored. Once restored, most Mercator Ikuü power products will default to the previous state prior to the power failure, whilst lighting and security products will default to ‘on’. The desired return state for Mercator Ikuü power points, in-line switches and plug bases can be adjusted within the app by the user.