Connection mode; Bluetooth &wifi<br> Viewing angle: 60 °<br> Pickup distance: 3M<br> Battery: 3 AAA batteries (excluding dry batteries, which need to be purchased by the customer)<br> Storage Cloud<br> Night vision lamp: 850n night vision lamp<br> Doorbell size: 73*46*25mm<br> Ding Dong machine size: 43*41*32mm<br> Specifications:<br> 1. Remote video calls can be easily handled without being at home<br> After the visitor presses the electronic doorbell, the doorbell will push the notification to the mobile phone, and the host can enter the mobile phone video call interface, remote video, and view the door situation in real time<br> 2. Two way call, intelligent voice change, girls feel at ease at home alone<br> Two way voice design, with high-power speakers and high-sensitivity microphones, the visual call in front of the door is clear and smooth. Support voice change intercom, easily change boys, and easily deal with various situations<br> 3. High definition wide-angle lens safety protection without dead angle<br> With the new generation of wide-angle lens, you can have a panoramic view of the situation in front of the door, so that there is no "safety corner" left in the door, and multiple visitors can also see it one by one<br> 4. Full encryption and automatic cyclic coverage of cloud storage<br> Visitor records are saved in the cloud, and data encryption is more secure. You can view visitor records through mobile app anytime and anywhere, and you know the situation at home like the palm of your hand<br> 5. The day and night dual-purpose camera can clearly display the night image<br> Built in high-power infrared night vision lamp, combined with ICR infrared filter, can automatically switch day / night mode. Even in the dark environment where you can't see your fingers, you can see clearly and shoot clearly<br> Package Included:<br> 1 * doorbell camera, 1* indoor Ding Dong machine, 1*Adhesive sticker, 4* screw, 1* user manual<br> Notes:<br> This product uses three No.7 batteries, which customers need to buy separately<br> undefined