... /4ch out CCTV, CCTV DVR 16CH video and 16CH Audio real time Recording and displayH.264 comperssion formatvideo input/output: 16ch ... )x90(H)weightApprox. 10 Kgworkingtemperature0 ~ 60 degChumidity10 ~ 90% Real time DVR, D1, Free DDNS, HDMI,CCTV, CCTV DVR, 16CH H.264 DVR