U405

--Video input(s): RCA x 4 channels.
--Audio input(s): 1 channel, audio output: 1channel
--Mpeg4 compression
--Display Rate: 30fps(NTSC), 25fps(PAL)
--Recording Rate: 30fps(NTSC), 25fps(PAL)
--Video resolution: 640x480, 352x240(NTSC), 704x576, 352x288(PAL)

U404

--Video input(s): RCA x 4 channels.
--Audio input(s): 1 channel.
--Mpeg4 compression
--Display Rate: 30fps(NTSC), 25fps(PAL)
--Recording Rate: 30fps(NTSC), 25fps(PAL)
--Video resolution: 640x480, 352x240(NTSC), 704x576, 352x288(PAL)

U401

--Video input(s): RCA x 1 channels.
--Audio input(s): 1 channel, audio output: 1channel
--Mpeg4 compression
--Display Rate: 30fps(NTSC), 25fps(PAL)
--Recording Rate: 30fps(NTSC), 25fps(PAL)
--Video resolution: 640x480, 352x240(NTSC), 704x576, 352x288(PAL)