4ch stand-alone dvr Language: chinese, english Recording rate: 120fps (ntsc), 100fps (pal) Display rate: 120fps (ntsc), 100fps (pal) Video input: composite:1.0v p-p/75+, bnc*4 Video output: composite:1.0v p-p/75+, bnc*2 Audio input: rca connector*2 Audio output: rca connector*2 Alarm input: no voltage contact to close, always open or close, 4ch input Alarm output: no voltage contact to close, always open, 2ch output Display resolution: 704-5-288 Hd1:352-576 D1:704-576 N.W: 4kg G.W: 4kg Dimensions: 310*45*280 mm.
