H.264 compression,4 channel standalone dvr,support SATA HardDisk, Mouse,USB,network, ... ,50f/s), NTSC(525Line,60f/s)Video Input4 channel, BNC , 1.0V p-p/75ΩComposite Video ... , 1.0V p-p/75ΩMonitor Video Output1 channel, BNC, 1.0V p-p/75ΩVGA Interface1 VGA ... ProtectionPower SupplyDC12V 3.0AConsumption10W(Without HDD)Working EnvironmentTemperature: +5°C~+50°C; Humid:< 90%Device Dimension220 x 210 x 44 ...