DS-6900UDI Series HD Video and Audio Decoder User Manual 
DS-6900UDI Decoder Us er Manua l 
73 
  Tolerance Temperature: Set the tolerance temperature and the device judges whether 
the triggered alarm stops until the device temperature/temperature difference is lower 
than  rule  temperature  by  tolerance  temperature.  For  example,  set  tolerance 
temperature as 3°C, set alarm temperature as 55°C, and set pre-alarm temperature as 
50°C.  The  device  sends  pre-alarm  when  its  temperature  reaches  50°C  and  it  alarms 
when its temperature reaches 55°C and only when the device temperature is lower than 
52°C will the alarm be cancelled. 
4. Draw  the  Target  Region.  Select  the  rule  and  draw  the  corresponding  frame/line/point. 
Click   to draw the point. Click   to draw the line. Click   to draw the frame. 
 
 Draw Point 
 
 Draw Line 
 
 Draw Frame