Reolink Argus 2 User Manual page 37

Reolink Wireless Battery-powered Camera
Note:
The LED light will flash every 20 seconds when the camera is in the standby status.
Spotlight
When an alarm event is detected, it will be automatically turned on, and the
spotlight can also add light sources to produce full-color images. It's only
applicable for model Argus 3 and Argus 3 Pro.
By default, the Night Mode is set as Auto:
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