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(Ref. OSHA 1910.95 for occupational noise exposure guidelines) SA400 SA400SA400 RADIO RADIORADIO SIREN SIRENSIREN PA PAPA HORN HORNHORN VOL VOLVOL MAN MANMANWAIL WAILWAILYELP YELPYELP ON ONON OFF OFFOFF PHASER PHASERPHASER The OFF/ON Toggle Power Switch controls the siren power. The siren may be left on any time the vehicle is in operation. The power should be turned off when vehicle is not being used to conserve battery power. The Rotary Function Switch selects various operating modes. These mo