Pittasoft BlackVue 7-1CH Quick Start Manual page 12

Peel off the protective film from the double-sided tape and attach the front
camera to the windshield behind the rear-view mirror.
Adjust the angle of the lens by pressing the release button and rotating the body
of the front camera simultaneously. We recommend pointing the lens slightly
downwards (≈10° below horizontal), so as to record video with a 6:4 road to
background ratio.
Remove the tamperproof case of the rear camera. Use the Allen wrench to
untighten the screw.
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