Alarm boxes

Alarm boxes, often also called emergency release stations or CO2 emergency release boxes, are mounted at eye level in the area of access points and are used to trigger SHEV groups. In the event of a fire, the CO2 cylinder inserted in the alarm box is pricked by a lever valve and the gas flows into the piping system. This opens SHEVs (smoke and heat exhaust ventilators) so that a low-smoke layer can form and people can escape to safety or rescue workers can fight the source of the fire. The more CO2 is required, the larger the alarm boxes. That is why there are different sizes. Most systems are "open only" systems. This means that the skylight domes or arcade rooflights are only opened with CO2 and must be closed again manually after the fire. "Open/Close" alarm boxes have a second lever with which the system can be closed again. Our alarm boxes are also available with electric or pneumatic remote triggering.