Door Peephole Viewer with Door Bell & Camera (CV-DV112)

Features
Doorbell function, Don't disturb function
1 Dingdong Sound for bell. 16pcs Chords selection.
6 Country Language: English, German, French Spanish, Chinese, Dutch, Menu setting
Simple DIY: No construction required, No destruct of existing door structure, three-minute quick assemblage
For any people: Both children who are not tall enough and the aged with poorer eyesight can easily and clearly see people outside doors More convenient to look who is outdoor than traditional peephole