... lens, Vandal-proof cctv camera IP pan tilt with mic IP VANDAL-PROOF DOME CAMERA 1. 1/3"SONY ... inputAudio CompressionG.726Audio Output1channel,RCA interface, linear outputAudio talk-backSupport Audio two-way talkSupported ProtocolsTCP, UDP, IP, HTTP, FTP, ... 24VDC 1AInput Power SupplyDC 12V,1AMaximum PowerLess than 7WOperating Temperature-20 ~ +55°COperating HumidityRH85%MAXDimension11.3cm(H)*14.1cm(Φ) ...