Self diagnostic reports via email testing com, mic, speaker switch Automatic polling and programming software included 2 Amp relay contacts for door/gate or SL 2 strobe light control SIP compatible see pg 2 for list of compatible IP PBX phone systems PoE powered class 1, 4 watts Automatic Noise Canceling ANC feature for proper operation in noisy environments Network downloadable firmware Meets ADA requirements for Emergency Phones Automatically lights the “Call Connected LED Transmits a unique location I.D. code or voice announcement Grade 2 Braille label for the visually impaired Non volatile digital voice announcer with 28 seconds of voice memory Handsfree operation Marine grade 316 stainless steel prevents corrosion on the stainless steel models Dials up to 5 emergency numbers E 1600 20 IP and E 1600 52 IP dial up to 5 non emergency “INFO” numbers Cycles through backup phone numbers on busy or no answer Optional Enhanced Weather Protection EWP , EWP products are designed to meet IP66 Ingress Protection Rating Hangs up on busy signal, time out or touch tone command Remotely programmable Extended temperature range 15 F to 130 F 11 different chassis or board only available