Omni-Alert

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Omni-Alert
Omnialertseries-official.jpg

All four models side by side.

Company Whelen Engineering
Produced ?-present
Type Electronic
Sound output 108-118 dBc at 100 feet
Wattage 400-1600 Watts
Documentation Manual

General

The Omni-Alert Series, formerly called the Vortex-O Series, is a line of electronic sirens produced by Whelen Engineering. They are essentially WPS-2900 series siren heads with Type-1 control cabinets that lack voice capability, much like the Vortex series.

An older OA2 using a WPS-2800 series head in Pawnee, IL (Pi_User)

Models

Model Image Output Drivers Product Sheet
OA1 WPS2901 Official.jpeg 108 1x400W OA1
OA2 WPS2902 Official.jpeg 114 2x400W OA2
OA3 WPS2903 Official.jpeg 115 3x400W OA3
OA4 WPS2904 Official.jpeg 118 4x400W OA4

References

https://web.archive.org/web/20091208161529/http://whelen.com:80/_MASSNOTIFICATION/omnialert.php https://web.archive.org/web/20040413000235/http://www.whelen.com:80/nondynmc/OutdoorWarn/vortexo.htm