Refresh Speed NTSC:30f/sec-CCIR:25f/sec Picture Pixels NTSC：768×480, PAL: 768×576 Signal Standard NTSC/PAL selectable camera signal input 8Channel,Composite 1.0VP-p75Ω,BNC camera signal Output Output to monitor,composite1.0VP-p75Ω,BNC Output to Quad,composite,1.0vp-p75Ω,BNC Output toVCR,composite,1.0vp-p75Ω,BNC Output Features Full screen/quad/freeze/auto switch/PIP Sequential Switching Time 1-99seconds,adjustable skip feature Channel Name Display available Clock Fuction Year/month/day display Supply Voltage DC12v Operating Current(Max) 800mv Relative Humidity ≤95%.no condensation Operating Temperature -10℃～+50℃ Dimension(L×W×H)mm 210(L)mm×149(W)mm×43(H)mm Net Weight 1100g Accessories User"s manual,fuse,power adaptor12VDC