Are raised during

On stores, as a rule, instead of the grilles are placed roller. They reliably protect from thieves at night, and they are raised during the store.

In suburban houses, gratings on the windows are also installed. But in addition to their windows, light sensors are placed, which, when outsiders are at the windows, turn on the lamps. In general, windows for windows are always best combined with other security systems. For example, you need to put a strong door in addition to the sieves. You can also mount video surveillance systems, motion sensors, etc. p.