2 Amp relay contacts for door / gate or SL-2 Strobe Light (DOD 242) controlBlue “Call Connected” LED indicatorSIP 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 environmentsVoIP audio detection eliminates the need for “Push to Talk” modeHandsfree operationT-10 Torx security screws for added securityLaser etched graphicsProgrammable to dial up to 5 numbersCycles through backup phone numbers on busy or ring-no-answerHangs up on busy signal, time-out or touch tone commandProgramming software includedNetwork downloadable firmwareRemotely programmableDiagnostics for testing mic, speaker, and relayFlush mounts with a double gang electrical boxExtended 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 859Power: PoE class 1 (<4 Watts)Maximum Sound Pressure: 90dB SPL @ 1mDimensions: 5.0? x 5.0? x 2.25? (127mm x 127mm x 57mm)Shipping Weight: 2.1 lbs (1.0 kg)Operating Temperature: -40°F to 140°F (-40°C to 60°C)Humidity: Up to 100%Material: 14 gauge 316 stainless steel with #4 brushed finishSPDT Relay Contact Rating: 2A @ 30VDC / 1A @ 125VAC, 250VAC maximumAudio Codecs: G711u, G711a, G722Network Compliance: IEEE 802.3 af PoE, SIP 2.0 RFC3261, 100BASE-TX with auto cross overConnections: (1) RJ45 10/100 Base-T, (3) gel-filled butt connectors