Vandal Resistant Features:14 gauge louvered 316 stainless steel faceplate with permanent laser etched graphicsStainless steel �Call� buttonHeavy duty metal keypadT-10 Torx security mounting screwsWeather Resistant Features:Enhanced Weather Protection designed to meet IP66 Ingress Protection Rating (see DOD 859)Marine grade 316 stainless steel faceplate screws and push button switchSwitch internally sealed per IP67Mylar speakerSelf-draining mic mountFaceplate mic and speaker gasketsTwo sets of SPDT 2 Amp relay contacts for door / gate or camera controlSecure Remote Relay Control using Viking RC-4A (DOD 585)Blue �Call / Status� LED indicatorSIP compliant (see Product Manual for list of compatible IP-PBX phone systems)PoE powered (class 2