JVC VN-T216VPRU Instructions Manual page 14

Depending on the material of your mounting surface, you may
Note
require different screws and anchors than those supplied.
If tilt angle is less than 20 degrees from the horizontal, the image
can flash by reflection of IR-LED light. Keeping tilt angle over 20
Note
degrees is recommended when IR-LED light is used.
This mounting kit
is optional
accessory.
13