Automatic polling and programming software included 2 Amp relay contacts to control an SL-2 Strobe Light (DOD 242) or LV-1K Line Verification Panel (DOD 246) Red “Call Connected” LED indicator SIP compliant (see Product Manual 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 VoIP audio detection eliminates the need for “Push to Talk” mode Network downloadable firmware Handsfree operation Meets ADA requirements for Emergency Phones: Automatically lights the “Call Connected” LED Transmits a unique location ID code or voice announcement Grade 2 Braille label for the visually impaired Non-volatile digital voice announcer with 28 seconds of voice memory Programmable to dial up to 5 numbers Cycles through backup phone numbers on busy or ring-no-answer Hangs up on busy signal, time-out or touch tone command Remotely programmable Diagnostics for testing mic, speaker, relay Extended temperature range: -40°F to 140°F (-40°C to 60°C) Enhanced Weather Protection (EWP), EWP products are designed to meet IP66 Ingress Protection Rating, see DOD 859