Help!  Just bought 4 of these as they are advertised as door or window contact sensors.  Great I thought I can put them on my conservatory and utility doors and windows.

Unfortunately they have arrived with basic sticky pads to attach to door and frame that will only work if the face of the door and the frame are completely flush when closed!  UPVC doors and windows are surely the most common type in the country and none of them that I've ever seen close flush in their frames.  Surely there must be a solution to this fitting hurdle otherwise this product is surely being mis-sold as a door contact?  I see no way of fitting these to ANY doors or windows in my house as NONE of my doors and windows close flush in their frames which is completely normal as far as I'm aware?  At the moment the only doors I could fit these too would be kitchen cupboards!

Come on TP-Link I must be missing something obvious here surely you haven't designed manufactured and marketed a door contact that can't actually be fitted to doors???

Please confirm I'm the one being daft and missing an obvious answer to this.