... ,built-in Web Server support email/external alarm *Plug and Play Series*Lens: standard black and white lens, f = 4mm, F = 2.0, ... on under low illumination, standard IR-CUT*Audio: built-in microphone and audio input and output interfaces, two-way voice intercom function* ... the DNS, DDNS, etc.*Network Connection: 10-100Base-T Ethernet interface, RJ45 connector*Power supply: DC 5V/1.5A external power ...