SueDonim
I asked my Dh what he thought the mark meant. Ever the engineer, he suggested it was the grade of rubber used in manufacturing.
My HWB says it dates from April 2010. I’m astonished, as I am sure it’s been replaced in the past five years or so. Maybe it had been hanging around in the small chemist where I bought it for the previous eight years.
Freya my friend’s son is a firefighter. He has forbidden his family from using electric blankets because so many fires start in them, so maybe they’re not that safe.
Many years ago I had an electric blanket. Woke one morning to a particularly cold bedroom so whilst I did my ablutions and then made myself a drink I put the blanket back on to warm the bed up again. A few minutes later a neighbour was knocking on the door to tell me there was smoke coming from my bedroom window. In the few minutes between getting out of bed and the kettle boiling, the blanket had burst into flames! Luckily, due to being noticed so soon, the irreparable damage was confined to just the bed, with just a bit of smoke damage to the room. Could have been so much worse! Put me right off electric blankets!