SIP Video Intercom• HD Audio & Video /Video Linkage /Self-Diagnosis /Auto Provision• Dual SIP line, Dual SIP servers and Onvif• 1 ports delay output and 1 ports sensor short circuit input• Broadcast function ,Ethernet RJ45 port, POE• Video codec H264, H265 codec,4MP Video Camera• Aluminum alloy housing, stability & reliability• Unlock door with DTMF, DTMF tones• Wall mounting,Products Dimensions: 105×175×38mm• Compact design, easy to embed into a bollard