Installation manual
CM-4221 Installation Manual 
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6.5.5  Digital Zoom 
The camera’s digital zoom is selectable in steps between x2 to x8. Select the desired zoom 
or “Off”. Press <√> to confirm the new setting.  
6.5.6  IR Function 
The IR Function setting activates two functions: IR mode, which is the IR Cut (IRC) filter for 
electronic day/night operation and, on the CM-4221-10-I and CM-4221-11-I cameras, 
activates the IR LED illuminator for use in low-light conditions or at night.  
  IR Mode 
The day/night IRC switching mechanism operates according to the ambient light 
level rather than activation of the IR LED mode. The IR Mode drop-down menu 
enables you to select from Auto/On/Off/Smart modes. The default mode is 
Smart. Following is an explanation of the four settings: 
o  Auto Mode-the camera converts from Day mode (color) to Night 
mode (monochrome) automatically at nighttime or in low light 
conditions. When there is sufficient light, the camera converts 
automatically from Night mode to Day mode. 
o  On-activates IR mode (puts camera into monochrome/Night mode). 
o  Off-deactivates IR mode (puts camera into color/Day mode). 
o  Smart-Smart Mode enhances monochrome/Night mode stability when IR 
illumination is dominant and keeps the camera from switching between Day 
and Night modes. In this mode, the IR Cut filter is on (i.e. 
monochrome/Night mode) when the IR LED illuminator also is activated. 
This prevents the camera from returning to color/Day mode. 
Press <√> to confirm the new setting. 
  IR LED 
This setting is used in low-light conditions or at night. IR LED lights are turned on 
or off, depending on the light sensor. The default mode is “Auto”. Two settings 
are available: 
o  “Auto”-the light sensor operates automatically. 










