The sirens are used as alarm, warning or signalling devices. Thanks to theircharacteristic siren wail, they generate an unmistakable and penetrating alarm. The high volume of the wail and ist allround directivity guarantee, that a suitably large range is attained. The different sizes and versions of the sirens open up a broad range of applications, including signalling for critical situations. Used with the protection cover available as optional extra, the sirens are suitable for outdoor use. Sirens for special voltages and frequencies are available on request. The housings are made of aluminium die cast and coated in light grey with weatherproof paint. The protection cover for the sirens F0 and FI is made of weather-resistant plastic. The protection covers of the other versions are made of sheet steel and coated with weatherproof paint. When using a protection cover, the motor conforms to protection degree IP 44 and the siren housing to IP 22. The sirens are designed for short-time operation S 2 –15 minutes according to VDE 0530, Part 1. For the power supply connection the sirens F0 and F1 are equipped with a cable gland Pg 9 and the types FII – FIIIb with a cable gland Pg 13.5.
