System Sensor's ExitPoint directional sounder now includes voice messaging, creating a new concept in fire safety - the audible exit sign. Once the fire alarm has played its role in alerting people to a potential threat, and occupants have made the decision to exit, the sounder tells them how to quickly locate the nearest exit. Trials using the system consistently show an improvement of up to 75 percent in evacuation times in smoky conditions and up to 35 percent when smoke is not present. The sounder plays a recorded alert message, which instructs the occupants of the action to take as they approach the device, including "stairs up," "stairs down," "area of refuge" and "exit here." In between the voice instructions, the unit's audio amplifier produces a pulsating noise consisting of broadband low, mid and high sounds, which makes it possible for those in the building to determine the location of the sound, even if they are unfamiliar with the building or if the exit signs are obscured by smoke.