Hi Can anyone help with a problem I have? My mum lives on her own in sheltered accommodation and is in early stage Alzheimer's and generally gets on well with my support. However I have one big problem I'm struggling to solve. My mum has Economy 7 heaters in her living room and hallway, fortunately she also has an instant heat electric heater in the living room along with an electric fire. The Economy 7 works well and is the most economical when used correctly. For those who don't know, the Economy 7 heater needs to be switched on at the wall and left switched on as it stores heat between midnight and 8 am, at 8 it starts to release the heat stored and to a degree the input/output can be controlled. My problem is my mum has a nasty habit of turning everything off at the wall when she goes to bed, TV, lights, kettle etc and you guessed it the Economy 7 heaters! In the morning she turns everything back on at the wall and can't understand why her heaters don't emit any heat and complains bitterly that they don't work and are faulty (the heaters are brand new and were only installed when she moved in 16 months ago). If left on they work perfectly well. I've had the same old argument with her 100 times about the heaters and how they will work perfectly well if operated correctly but she won't have it. There's something wrong with the heaters not her, sound familiar?! I'm hoping that there is some sort of lockable box available that I can attach to the switch that I can lock and she can't tamper with, particularly in this cold weather. I've tried putting up notices, I've stuck instructions on the heaters and covered the switch with tape but nothing has deterred her from turning them off! Does anyone have any practical ideas that I can try before I kill her?!