-Outline Dimension (W*H*D): Back Box: 90mm*185mm*48mmOverall size: 85mm*180mm*45mm-Network Connector: Standard RJ45 -TCP/IP Connection Speed: 100Mbps-Operation System: Linux 2.6-Operating Temperature: -20°C to +55°C-Operating Humidity: 20%-93%-Power Consumption: ≤6W-Power Input: DC12V Products features Slave Intercom Hand-free communication with master intercoms Emergency Call Dry Contact interface (Connect different devices for additional functions) Power Over Ethernet (POE) Easy to use, direct button to call master intercom Facilitate the rescue of person in case of emergency Equipped with call button, speaker and microphone External audio or speaker connection ready Support WEB setting interface , support online upgrade General Specifications Flush or surface Mounting Aluminum Finishing Communication Protocol: TCP, UDP, RTP, ARP, IGMP, HTTP, SIP Camera: 720P Video Code: H.264 Audio Code: G.711