1 button SIP intercom. 2 voice channels. Audio codecs G.711 PCM and 64 kbps. Audio: Acoustic pressure for 1kHz at a distance of 1m: 61,5 dB. Interfaces: Ethernet connector – RJ45, Transmission speed 10/100 BASE-T. Active output: 8V – 12V DC/500mA. Passive relay output: Maximum voltage 30 V DC, Maximum current 1 A DC. Power supply: 802.3af (PoE):48 V / 380 mA DC or Adapter (100-230 V ± 10%, 50/60 Hz / 12V DC, DC power supply 12 V / 2A DC). Dimensions: 193 x 115 x 39 mm (h×w×d). Weight: 500 g. Operating temperature: –40 to 131 ºF. Cover level: IP 54.