Detailed Description  Features:  1) Video signal: EIA/CCIR 2) Picture resolution:  a) CCIR: 720(H) x 576(V)  b) EIA: 720(H) x 480(V) 3) Video input: 4 channels for video output 4) Video output: one channel for monitor output, one channel for   video output 5) Video output mode: quadrant or single picture display and auto   switchable; 1~4 camera display selectable 6) VCR function: VCR playback and output function 7) Date and time display: real time display 8) Alarm: video loss message display and bi-bi voice alarm 9) Auto scan time: 1~99 second adjustable 10) Power supply: DC 12V 450mA/220V 11) Power consumption:10W 12) Unit dimensions: Ф210 x 220 x 44mm