When a visitor presses the smart doorbell, it activates the sound and the camera sends a notification to your phone. It features two-way communication, PIR motion detection, and IR night vision to protect your family more effectively. The smart doorbell offers you home security, providing you with safety and convenience! Features: [720P Video & 166° Wide Angle] - 1280*720 resolution with a 166-degree viewing angle ensures clear and stable videos and images. 3 Wake-up Methods: Doorbell button press / PIR detection / Mobile phone APP. [APP Control & Two-Way Audio] - Download the mobile app to connect the doorbell with 2.4 GHz Wi-Fi, so you can detect and secure your home wherever you are. Seamless two-way audio makes it easy to talk to your visitors. [PIR Detection] - Supports PIR motion detection; when someone walks in front of the door, the doorbell immediately sends an alarm message to your mobile phone (set the function in the app in advance). [IR Night Vision] - Day and night mode switch automatically; whether day or night, the image is clearly visible to keep you and your family safe. IR night vision is activated when the illuminance is less than 2 lux. [2 Storage Methods] - Supports cloud storage service for convenient use. Or you can use a TF card (not included) to store videos, and it supports automatic loop recording if the card is full. [Low Consumption & Easy Installation] - Powered by lithium battery (not included) / USB interface / AC input; choose according to practical needs. No wires are required; easy to install with mounting bracket, screws, and adhesive tape. Note: 1. Please read the user manual carefully before use. 2. Doorbell batteries and TF cards are not included. 3. Size and color may vary slightly due to manual measurement and different lighting conditions or other reasons; please understand. Thank you for your understanding. Features: Color: Silver and Black/Silver (Optional) Material: ABS Resolution: 1280*720 Field of View: 166° IR Night Vision: 6 pcs 850nm Wi-Fi LEDs: IEEE 802.11 b/g/n Audio: Noise-free two-way communication App Download: WoWCam PIR Motion Detection: Support Wake-up Method: Doorbell button press / PIR detection / APP Power Supply: 3 * lithium battery (not included) / USB interface / AC input Storage: Cloud storage or 8G/16G/32G TF card (not included) Power Consumption: 200uA Working Current: 170mA Doorbell Size: 14.4 * 7.5 * 3.3cm / 5.7 * 3.0 * 1.3in Doorbell Weight (without batteries): 140g / 5.0oz Package Size: 18.8 * 10.5 * 4.5cm / 7.4 * 4.1 * 1.8in Package Weight: 260g / 9.2oz Package List: 1* Doorbell (including mounting bracket) 1* Installation Screw Kit 1* Adhesive Tape