CyberData 011211 VoIP V3 Indoor Intercom Type: Indoor Intercom Weight: 1.25 Specifications: Ethernet I/F: 10/100 Mbps Protocol: SIP RFC 3261 Compatible Payload Types: G711 Power Input: PoE 802.3af compliant or +12 to +24 VDC at 1000 mA (500 mA minimum) Dimensions: 5 x 5 x 2.5 Parts: 2 Year Labor: 2 Year