My mom gets cold easily and we have two space heaters and an electric couch blanket for her to use. This mroning I found her covering one of the space heaters with clothing. It was on. Does anyone know of a small electric heater that has lockable controls? I really don't know what to do with this one. My mom is still very functional but not always safe. She got quite upset when I asked her to take the clothing off of the heater.