BlackVue DMC200 User Manual page 7

Turn off the engine. Open the cover of the microSD card slot, gently push the
card into the slot until it locks into place and close the cover.
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 rotating the body of the front camera. We
recommend pointing the lens slightly downwards (≈10° below horizontal), so as
to record video with a 6:4 road to background ratio.
Note
y Recorded videos from DMS are saved to the microSD card on the front
dashcam.
y For DR750X DMS LTE Plus users, please insert the SIM card following QSG
that's included in the box.
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DMC200