Home > Products > Evacuation SolutionsOccupant Warning (OWS) EvacU Stand Alone OWS The EvacU is a fully self-contained Occupant Warning System available from 25 Watt up to 200 Watt. View Product 120W OWS A 120 Watt Single Zone Occupant Warning System with optional front panel controls. View Product 250W OWS A 250 Watt Single Zone Occupant Warning System with optional front panel controls. View Product 500W OWS A 500 Watt Single Zone Occupant Warning System with optional front panel controls. View Product 25W & 50W OWS A 25 and 50 Watt Single Zone Occupant Warning System with optional front panel controls. View Product