Hi, this is my first post...i am getting extremly concerned about my mum as she has started to leave the house during the night as she thinks it is day time. She lives on her own so clearly i am concerned about this. What i was looking to get were some kind of sensors on her doors that would alert me if they were opened say between 8pm and 8am. Does anyone know if such a thing is available and how i go about it? Many Thanks