Power supplydc 5v battery working time hours4 10 battery capacity450 effective pixels03 mp minimum illumination lux15 operate temperature 40 85 storage temperature 40 85 sn ratio db58 transmission frequency24ghz unobstructed effective rangem300 tft receiver monitorinch24 camera type14 inch cmos 420tv line night vision camerayes two way lntercomyes temperature displayalarmyes display resolution320 x 240 contrast3001 built in speakeryes