Cover the area you wouldn't detection?. Want to detection only the customized zone?. 𝙉𝙤 𝙃𝙞𝙙𝙙𝙞𝙣𝙜 𝙈𝙤𝙣𝙩𝙝𝙡𝙮 𝙁𝙚𝙚𝙨. No need change them one by one. NOTE: When plugged with a larger monitor screen via the HDMI port, the 10.1" NVR screen still works well but in black screen.
eBay