EWP products feature foam rubber gaskets and boots, sealed connections, gel-filled butt connectors, as well as urethane or thermal plastic potted circuit boards with internally sealed, field-adjustable trim pots and DIP switches for easy on-site programmingMeets ADA requirements for Emergency Phones: -Can automatically light the Call Connected LED for the hearing impaired -Transmits a unique location I.D. code or voice announcement -Grade 2 Braille label for the visually impairedNon-volatile digital voice