The Series 57 “Emergency-call” pushbutton’s signature large actuating area and illuminated feedback ring is ideal for the rigors of public interaction. Its easily identified “call for aid” symbol allows users to recognize the device in emergency situations. This product is suitable for all types of applications where call-to-aid devices are required, including rail lavatories, safety terminals or public help kiosks. Sealing capabilities allow for outdoor use. A wide, raised-aluminum bezel helps protect against accidental usage and vandalism. Heavy-duty plastics and aluminum construction help withstand years of harsh use.