1. Real-time monitoring: Even when you are away, you can actively activate monitoring anytime, anywhere, and you will not miss any images.

2. Long-distance signal transmission: guests can make video and voice calls and make short-time video recordings. WIFI connect multiple users and watch online at the same time.

3. Wide viewing range: the corners of the door, courtyard, corridor, etc. at a glance. are clear, without opening the door.

4. 50M penetration power: steel doors, wooden doors, brick walls, etc. They can penetrate without hindrance, so you don't have to worry about not receiving signals and sound.

5. APP Control: You don't need any complicated wiring and cumbersome settings, just one key to start the machine, download the APP and follow the reminder to plug and play.