Older range tops and many commercial ranges may have 'standing pilots' that even tho' they are hidden under the cooktop surface, can still sometimes go out. If the knob is turned on and left on, it can be very dangerous.

I have even seen an elderly person bump a knob to a burner, and the pilot had blown out. The apartment filled with gas before he was aware of it or where it was coming from. Luckily he called someone who came in and opened the windows and turned off the gas.

Not many residential gas ranges have indicator lights for the top burners- a few do. Most have a light to let you know the oven gas is on.

The auto re-ignition is important because if you are simmering or cooking rice, you are likely not standing by the range to notice. Plus, since you use low flame in these cases, the chance of the flame being blown out by a breeze is more likely.

Some of the Italian ranges might have thermo-piles that shut the gas off when the flame goes out. Like maybe the Berta. But the Elux has electronic ignition.

Please see Mama23E's current thread on two similar Elux rangetop models and link to their specs on this matter. It would be helpful if this was more clear under the Elux general spec list, yet I don't think electric ignition is synonymous with auto re-ignite.

Maybe others will help clarify this important point.