The IX-BA is a surface mount IP addressable audio only door station. Weather resistant. Can be connected to the network using CAT-5e/6 cable. It has a built-in dry contact for door release (24V AC/DC, 500mA). It can call up to 20 different master stations (IX-MV or instances of IX Mobile). An additional 20 master stations can be called using the contact input. The speaker and microphone allow for two-way communication with a master station or the IX Mobile App. The 600 ohm output can be used for paging announcements or to run audio to an external speaker/horn. The unit is 802.3af PoE compliant.