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6. Mechanical size
Figure 6-1 shows the mechanical dimensions of the module, all units are in mm mm. the plate
thickness of the module is 1.2 mm with a tolerance of ±10%.
7. Installation Instructions
Radar housing requirements
If the radar requires a housing, the housing must have good wave transmission characteristics in
the 24 GHz band and must not contain metal or materials that shield electromagnetic waves.
materials that have a shielding effect on electromagnetic waves. See the Millimeter Wave Sensor
Radome Design Guide for additional considerations.
Installation environment requirements
This product needs to be installed in a suitable environment, if used in the following environment,
the detection effect will be affected：
There are non-human objects in the sensing area that are in constant motion, such as animals,
continuously swinging curtains and large green plants facing the wind vents.
There is a large area of strong reflective plane in the sensing area, and strong reflectors are
causing interference to the radar antenna.
When wall-mounted, you need to consider the interference factors from outside such as air
conditioners and electric fans on top of the room.
HLK-LD2420
Figure 6-1 Hardware Mechanical Dimensions
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