Features: When someone presses the doorbell button, you will receive a notification on your phone, and you can have real times conversations with anyone at doors. To hide your identity, you can also protects privacy and eliminates security risks by disguising voice. Suitable for women who live alone at home and younger children and the elderly. video doorbell camera has night visions, can automatically switches between day and night. Wireless doorbell camera images and video capture are clear and with Highly definition good resolution. 38 built-in melodies for you to choose from, and the volume of doorbell prompts can be adjusted. Easy installation, no wiring required. Equipped with a large capacity rechargeable battery, it can stand by for about 365 day without the need for frequent battery replacement. Specifications: Material: Aluminum Alloy Door Bells Size: 75x48x16mm/2.95x1.89x0.63inch Dingdongs Bells Size: 50x38x20mm/1.97x1.50x0.79inch Infrareds drive: maximums 50mA Charging power supply DC5V Day and night switching mode: automatic Infrareds light control automatic, sensitivity level adjustable Infrareds light wavelength: 850nm Mobile detection: supported, with adjustable sensitivity level Connection method: 2.4GHzWiFi Power supply method: battery powered Battery level detection: supported, voltage belows 3.4V, unable to wakes up Working temperature: -10~45℃ Working humidity: ≤ 95% Package Includes: 1set Video Doorbell Camera with Chimes note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.