Yeah, you do need to be careful. The magnets in the Jeevony DV180 are powerful. They can damage electronic devices and potentially erase magnetic storage media. Keep your phone, smartwatch, tools, and any credit cards with magnetic strips well away from the mating surfaces when you're handling or installing it.
Also, if you or anyone in your household has a pacemaker, you need to consult a physician before handling these. Strong magnets can interfere with some types of pacemakers.