OdiySurveil(TM) HD UTP Balun Active Video Receiver for CCTV DVR Camera System,500M for 720p,450M for 1080p Material : Alloy & ABS Plastic with pure copper BNC connectors, Product Name :HD-CVI/TVI/AHD HD UTP Balun Active Receiver; To work with passive receiver up to 500M at 720p,450M at 1080p,compatible with PAL,NTSC,SECAM, Stability: MTBF&gt;30,000h; OdiySurveil(TM) Brand product with the best quality and more efficient signal transmission,do not compare with those junk materials. Male BNC input ports can connect with DVR directly; 4-level Slide Switch adjustment,Adaptive Voltage:DC12V(Adapter)+/-10%; With indicator:Red LED for Power Indicator,Green LED for Video Indicator,Dimension(L*W*H):64mm*42mm*22mm(BNC not included);