motion sensor in hand on white background. device that tracks the movement of objects. It is used to automate operation of electrical appliances surveillance video cameras alarms and security system
ID: 1965433138
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- 大图:6000 × 4000 像素·50.8 cm × 33.87 cm·300dpi·JPG
- 中图:1000 × 667 像素·35.28 cm × 23.53 cm·72dpi·JPG
- 小图:500 × 334 像素·17.64 cm × 11.78 cm·72dpi·JPG