In the multi-screen divider according to the present invention, even if an alarm signal is not input by an alarm generating sensor, the movement on the monitoring screen is automatically detected and the screen in which the motion is detected is displayed in the currently set screen display mode So that the alarm signal can be generated at the same time as displaying it on a single screen.;Therefore, it is possible to improve the monitoring performance by detecting the movement of the subject which is not detected by the sensor by the multi-screen divider according to the present invention, and at the same time, It is possible to provide an advantage that the surveillant can easily recognize the movement of the subject by automatically changing the mode to the single screen mode so as to display it in a single screen.
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