Users Guide

3. Use the Dynamic charge policy toggle switch, to enable the correct charge policy.
This setting ensures that the system automatically switches the charging policies between, Primary AC, Express Charge, and
Standard, according to the usage pattern of user.
NOTE: If you have purchased a long cycle life battery with a three-year warranty, the Dynamic charge policy toggle
switch is disabled. A long cycle life battery is locked in one charging mode, and the system cannot switch between
different charging modes.
Proximity Sensor
Proximity sensor is an integrated feature in selected Dell laptops and mobile workstations. The sensor detects your presence
when you are in front of your system and within the field-of-view (FOV) of the sensor. When you move out of the FOV, the
brightness of your system display reduces, and locks your system that is based on the lock time settings. When you walk in to
the FOV, the system display turns on and the login screen appears.
When enabled, the proximity sensor can be accessed when the system is on or in modern standby state, and when the system is
in clamshell or stand mode.
Proximity Sensor supports the following capabilities:
● Walk Away Lock—When you move out of the FOV, the system locks, and the display is turned off based on the preferred
lock time settings. The system then enters modern standby state. This setting secures your system and saves power when
you are away from it. By default, the Walk Away Lock button is enabled, and the screen lock timer is set to 60 seconds. The
Walk Away Lock setting is suspended when:
○ Snooze is enabled in Dell Optimizer.
○ User activity is detected through a keyboard, mouse, or a touchpad.
○ An application running on the system is requesting audio or display power from the operating system. For example, when
you are using Skype during an active call, and when you are streaming video in Windows Media Player.
○ The proximity sensor feature is configured to be disabled when an external monitor is connected to the system.
● Wake On Approach—When you walk into the FOV, the system wakes from modern standby, turns on the display, and
displays the Windows login screen. This setting enables faster sign-in as you approach your system. If you have set up the
Windows Hello feature, the camera recognizes your face and Windows automatically unlocks your system. If you have not
set up Windows Hello, you have to enter your system password to unlock your system. By default, the Wake on Approach
button is enabled. The Wake On Approach is suspended when:
○ The battery is low, and the system is not plugged in to a power source.
○ The proximity sensor feature is configured to be disabled when an external monitor is connected.
● Keep Alive—This feature prevents Windows from turning off the display, and ensures that the system does not enter sleep
state when:
○ The system is plugged to a power source.
○ The user is present in the FOV but not engaged with the system.
○ There is no application running on the system requesting audio or display power from the operating system.
NOTE: The Keep Alive feature can only be configured using CLI commands or WMI and it is enabled by default.
● Special Use Cases—You can select the following two options to increase the efficiency of the Proximity Sensor feature:
○ Use camera to increase the accuracy of presence detection
NOTE: This option is available only on products that support Intel Visual Sensing Technology.
○ Keep Proximity Sensor enabled while connected to external monitors
Getting started with Dell Optimizer
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