BE NOTED BEFORE TO BUY: Tuya WiFi 1080P Peephole Door Camera Viewer 4.3 Inch TF Card or Cloud Storage Support Max. 128G TF Card for local or event recording. Also support 30days trial cloud stotage based on Tuya platform Long-lasting battery and app control Built-in 5000 mAh rechargeable large capacity battery supports 30 days long standby (usually 3-5 calls per day), low battery reminder and USB port charging. This digital door viewer supports both iOS and Android, download the Smart Life App to receive every detail of what happens every day at your front door anytime, anywhere. Never mi a visitor or prevent theft, strangers or voyeurs. One-way intercom brings convenience When someone at the doorbell, it will trigger pir and you app get notifications and you can check the live view and check who at the door and hear what the visitor say. But visitor can not hear what you say. Because door camera is so mini, that can not install the speaker. PIR detection and 150 Wide Angle Using 1080P camera 150 wide-angle lens, automatic switching of day/night vision sensitivity (adjustable; distance is about 3-4 meters), TFT color LCD display, suitable for AHD images and videos. Motion detection (PIR motion sensor can automatically detect body movement and trigger push meages and videos (stored to TFT card or mobile phone) within seconds, keeping your home safe 24 hours a day.100 Wide Angle, Easily Maximize Your Home Security with a Clear View of Your Doorway. It can connect to WiFi router wirelely. You can monitor (handheld including smartphones, Android tablets) and one or two-way intercom with noise reduction (view visitors, video calls, snapshots, recordings, etc.). The system function menu is located in the mobile APP console instead of the indoor display. (The device is widely used in homes, apartments, villas, hotels or offices, etc.).At the same time the large 4.3" LCD screen enables you or your family to see out the door clearly and sharply. Tuya Smart Peephole Viewer WiFi Digital Door Viewer (1 Doorbell 1 Monitor) - Built-in 5000mAh rechargeable battery with 4.3' Monitor- Support Alexa Echo show/Google Chromecast live view. ( Please select the SKU with "ALEXA" words) Tuya Smart 4.3" LCD Digital Peephole Door viewer Camera 1080P PD10: Door Camera/32G/64G/128GNOT SUPPORT ALEXA)PD10A: SUPPORT ALEXA GOOGLE VIDEO ON ECHO SHOW.With 32G/64G/128G Mean Package with Micro TF Card.(CHOOSE Alexa Door Camera/32G/64G/128G)