Our extensive line of indoor and outdoor SIP-enabled intercoms offers two-way communication and secure access control for your VoIP phone system. These devices are ideal for settings such as commercial and residential complexes, schools and universities, retail establishments, warehouses and manufacturing facilities, SMBs, parking garages, shipyards, and much more.New Features: Optional red/green/blue/white strobe kit connection available (part number 011288). Integrates with the Network Dual Door Strike Relay Module (part number 011375) and the Door Strike Relay Module (part number 011269)Now with enhanced acoustic echo cancelerFeaturesPoE 802.3af enabled (Power-over-Ethernet)SIP compliantFull-duplex voice operationNow supports SRST (Survivable Remote Site Telephony) in a Cisco environmentStreamlined case designNetwork web management and firmware downloadNetwork-adjustable speaker volumeConcurrent SIP and multicast pagingDry relay contact for auxiliary controlD