QE EL electric box is a framework that manages up to 8 devices, divided into two groups of four, and allows them opening and closing for daily ventilation.
In combination with optional GUARDIAN weather detector unit and its sensor, QE EL electric box automatically closes open devices in case of adverse weather conditions.
Automatic re-closing is stopped if fire emergency signal is active.
Operation is guaranteed even in the event of 230V mains absence, thanks to a backup battery. In that case manual opening for daily ventilation is inhibited, while the emergency opening is always active.
230V mains absence is signalled by a cyclic acoustic signal, which become continuous when the battery is low.

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