Whelen Outdoor Warning Products Ragan Communications is a Master Distributor for Whelen Total Electronic Outdoor Warning Sirens. 2900 Series Omni-Directional Sirens. Premier electronic siren system with ten (10) models to choose from, 108 - 126 dBc @ 100 feet, with many options provided as standard equipment. WPS-4000 Series Directional Sirens with Public Address. System consists of speaker assembly, a pole top mounting bracket & brushed aluminum electronics cabinet. Available in three different models rated from 124 - 130 dBc @ 100 feet. Vortex 129 dBc Siren, Rated for 6000 foot radius coverage (Without Public Address). Includes Heavy Duty maintenance free rotor, local control & timer, temperature compensated charger, SI TEST & six standard tones.