X3 Tuya WiFi Video Intercom Wireless Home Doorbell with Remote App Control Two-Way Audio: Built-in microphone to talk to your visitor anytime, anywhere Two-way talk intelligent voice changer: Two-way voice intercom, support voice change design, female voice to male voice, to deal with various situations HD wide-angle lens: A new generation of a large wide-angle lens, a panoramic view of the situation in front of the door, so that there is no "safety blind spot" at the door, and multiple visitors can see it all IR Motion Detection: Built-in human body sensor (IR), real-time perception of front door movement and push notifications to your phone. You can playback history records in the APP at any time Clear Night Vision: The camera with infrared night vision, which automatically switches at night. Let you watch clear pictures/videos at night Specifications: Wireless Frequency: 2.4GHz WiFi RF Frequency: 433MHz Receiver Range: 3 meters Transmitter Battery: 3 AAA batteries (not included) Field of View: 60 degrees Night Vision Light: 850N Infrared Night Vision Light Doorbell Camera Dimensions: 73 x 46 x 25mm Receiver Dimensions: 43 x 41 x 32mm Installation Method: Use industrial-grade adhesive or expansion screws Package included: 1 x Receiver 1 x Transmitter 1 x English Instruction Manual Other items not included