I've recently had a new boiler fitted, and it came with a nifty RF remote thermostat.
The receiver at the boiler end was labelled with the following warning 'Do Not Press This Button'. Now come on, you can't give someone like me a box with a button on it marked 'Do Not Press This Button', it's just too tempting!
Sadly, it just resynchronises the remote device, no fireworks, no nuclear armageddon, not even a little sign lighting up to say 'Please Do Not Press That Button Again'.
Thank you the marketing division of The Cirius Cybernetics Corporation Siemens.