Self diagnostic reports via email (testing com, mic, speaker & switch)Automatic polling and programming software included2 Amp relay contacts for door/gate or SL-2 strobe light controlSIP 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 environmentsNetwork downloadable firmwareMeets 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 impairedNon-volatile digital voice announcer with 28 seconds of voice memoryHandsfree operationMarine grade 316 stainless steel prevents corrosion on the stainless steel modelsDials up to 5 emergency numbersE-1600-20-IP and E-1600-52-IP dial up to 5 non-emergency ?INFO? numbersCycles through backup phone numbers on busy or no-answerOptional Enhanced Weather Protection (EWP), EWP products are designed to meet IP66 Ingress Protection RatingHangs up on busy signal, time-out or touch tone commandRemotely programmableExtended temperature range (-15?F to 130?F)