Item Type: Video Doorbell Material: ABS Size: Approx. 141 x 45 x 27mm/5.55 x 1.77 x 1.06in (Length x Width x Thickness) Strong Penetration: Approx. 50m/54.7yd Connection Method: Wifi Battery Type: 2 x 18650 (Delivered without Batteries) Video Shooting Resolution: 1080P Waterproof Rating: IP54 Support Night Vision: Yes APP: Supprot for Tuya 1、Download for TUYA smart with your mobile phone, which supports real?time monitoring of mobile phones. Actively wake up monitoring anytime, anywhere, grasp the dynamics, and never miss any screens. 2、Human body induction, abnormal reminder. 24 hours automatically detect abnormalities and take photo and video, and push abnormal messages to the mobile phone at the same time, always remind. 3、Using intelligent infrared recognition, it will automatically switch the night vision mode when the light is insufficient, so that you can see any abnormalities outside the door at night, and monitor the safety of the whole family. 4、Put the battery (not included) into the doorbell, connect to WIFI, no need to connect with wire, the signal is stable. With 166° super wide?angle lens, avoid blind spots, corners outside the door/yard/aisle at a glance. Supports HD two?way video and voice call. 5、Strong penetration of 50m/54.7yd, no longer have to worry about not receiving the signal, no sound, with wireless transmission function, multiple bell can be configured at the same time. 1 x Doorbell 1 x Sticker 1 x Manual 5 x Screw 4 x Nut 1 x Mini Wrench