Ensure that there are no other objects blocking the ToF light within a 30 cm radius of the
front of the device.
When you install devices on the top of swinging doors, it is suggested to keep the door
normally open. If the door must be normally closed, please install the device on the other
side of the door to keep away from the door movement. And it is suggested to keep away
from the door with a distance of at least 30 cm.
6.5 Factors Affecting Accuracy
Wearing a fisherman's hat or carrying a cardboard box on the shoulder: The target will not
be recognized because it will become unlike a human in depth map.
Handheld or cart-carrying a humanoid doll with sufficient height to pass by: The doll will be
mistakenly detected as people because it is human-like in depth map.
7. Communication Protocol
7.1 Uplink Data
VS133 reports basic information of sensor whenever joining the network and the number of
people periodically. For decoder examples please find files on
https://github.com/Milesight-IoT/SensorDecoders.
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