[reticulated]

Our kitchen scales have a single on button and auto power-off after a minute or so. I discovered completely by accident that holding the power button down for 3-4 seconds powers it off. Nowhere in any of the manuals was this mentioned (I went back and checked)

[LorenPechtel]

Many devices will turn off when you hold the power button long enough.

[rightbyte]

Maybe a rouge engineer added it for the benefit of mankind?