SIP Audio Door Phone• HD Audio/Video Linkage /Self-Diagnosis /Auto Provision• Dual SIP line, Dual SIP servers and Onvif• One touch button for emergency calling and phone key board , RFID card• 1 ports sensor short circuit input,1 port recording output• Unlock door with DTMF, DTMF tones,Active URI remote control• Ethernet RJ45 port, POE,• Enhanced Aluminum alloy housing, IP65, IK10 protect,stability & reliability• Wall mounting, Products Dimensions: 185*120*38 mm