Audio intercom KNZD-47A

videoemergencyaccess control

1. Robust aluminium alloy die-cast body stainless steel face plate 2. Waterproof rating IP55 dust proof. 3. Supper good sound clarity during conversation. 4. Support One-way video call, Built-in 3W speak, Support for night vision. 5. Lightening protection to ITU-T recommendation K.21. 6. DC12V power supply. 7. Temperature range from -40 degree to +70 degree. VoIP SIP2.0 telephone DTMF dialing MTBF:100000hours MTTR: 2 hours Hotline (maximum length of each number is 16 digits) Communication: Full duplex 2-way hands-free communication Call Control Signaling:VOIP SIP Info(DTMF), RFC 2833(DTMF) Auxiliary Contacts:1 Aux Output, dry contact Contact Ratings. Load: Resistive load Rated load:0.3 A at 125 VAC; 1 A at 30 VDC Rated carry current:1A Audio Codes:G.711, G.722, G.729 Network:10/100 BaseTX Ethernet, RJ45 connectors, Cat5e or better IP Protocols:IPv4, TCP, UDP, TFTP, RTP, RTCP, DHCP, SIP LAN Protocols:Power over Ethernet(PoE,802.3af), WLAN(IEEE 802.3af), Network Access Control(IEEE 802.1x),STP(IEEE 802.1d), RSTP(IEEE 802.1d-2004) Echo cancellation code:G.167/G.168