The N-8640DS is an IP door station employing packet audio technology. Connecting the N-8640DS to an IP network (LAN or WAN) permits hands-free conversation of high sound quality to be made between the N-8640DS and the intercom station connected to the IP Intercom Exchange, or between the N-8640DS and an IP multifunctional master station. Besides, the N-8640DS can be used in conjunction with the Multi Interface units through a network. The N-8640DS is equipped with 1 channel of control input, 5 channels of control outputs (including 1 channel of relay control output), and speaker output, thereby enabling connections of external equipment such as a sensor, indicator, and external speaker.
Specification Power Source Power supply device that complies with IEEE802.3af standard or 12 V DC (supplied from the AC adapter (option) Power Consumption Use of the AC adapter (12 V DC): 3.5 W (station only), Use of the PoE (48 V DC): 5 W Speech Method Hands-free conversation Audio Frequency Range 300 Hz – 7 kHz Hands-free Speaker: 3.5 cm (1.38″) cone-type, maximum output 0.5 W, 8 Ω Microphone: Omni-directional electret condenser microphone Control Input 1 channel, no-voltage make contact input, open circuit voltage: 5 V DC, short circuit current: 10 mA or less, unterminated ends Control output Open collector output, 4 channels, withstand voltage: 30 V DC, control current: Max. 50 mA (4 output 1COMMON), unterminated ends Relay contact output, 1 channel, withstand voltage: 30 V DC, control current: Max. 500 mA, unterminated ends External Speaker Terminal Maximum output 0.5 W, 8 Ω, unterminated ends Network Section Network I/F: 10BASE-T/100BASE-TX (Automatic-Negotiation) Network protocol: TCP/IP, UDP, HTTP, RTP, ARP, ICMP, IGMP Audio packet transmission system: Unicast, Multicast Number of paging destinations: 0, *Reception only Connector: LAN: RJ45 connector (PoE compatible) Voice sampling frequency: 16 kHz, 8 kHz (controllable on the software) Quantifying bit number: 16-bit Voice encoding method: Sub-band ADPCM, Cryptosystem Voice packet loss recovery: Silence insertion Audio delay time: 80 ms, 320 ms (controllable on the software) Indication Status lamp Installation Method Flush-mount/Surface-mount Operating Temperature -10 ℃ to +50 ℃ (14 ゜F to 122 ゜F) Operating Humidity 90 %RH or less (no condensation) Housing Protection BS EN62262: 2002: IK02 equivalent Dust/Water Protection IP65 (Note that panel edges must be sealed at installation.) Finish Plate: Stainless steel (SUS304), hairline Call button: Metal Dimensions 115 (W) × 162 (H) × 58.5 (D) mm (4.53″ × 6.38″ × 2.3″) Weight 780 g (1.72 lb) Accessory Box mounting screw (No.6-32UNC × 20)