Battery Powered: The doorbell is powered by 3 x AA batteries (not included) Video Call: Convenient for receiving visiting guests, when someone rings the doorbell, the doorbell will push a notification to the mobile phone, and the owner can enter the mobile phone video call interface Simple Installation: Supports adhesive installation, no need to punch holes, and supports punching installation, convenient to install Screenshot: Store to the cloud, safe and leak-proof. When a visitor rings the doorbell, it can capture the visitor's photo and save the record to the cloud, so that the mobile phone APP can view past photos at any time, which is safer and more secure Wireless Video Doorbell Camera: Supports WiFi and APP connection, high resolution, presenting you with clearer pictures and videos and more details Two-way audio: built-in microphone, you can see visitors and talk to them anytime, anywhere Night Vision: Built-in high-quality infrared LED lamp beads and light sensors, clear pictures at night; after the ambient light drops to 2 lux, it can also automatically switch from day mode to night mode Adjustable Ringtone and Volume: The signal is strong and stable, easy to pair, and the ringtone and volume can be adjusted according to your preferences Specifications: Material: ABS plastic, electronic components Day and night mode switch: automatic Video transmission encryption: AES Infrared light control: automatic, adjustable sensitivity Infrared light wavelength: 850Nm Motion detection: automatic, adjustable sensitivity Connection method: WiFi Working temperature: -10~45℃ Working humidity: ≤95% Battery: 3 x AA batteries (not included) Intercom type: color visual Camera resolution: 480*640 Doorbell size: 100x63x30mm Indoor unit size: 55x43x25mm Doorbell net weight: 84.2g Indoor unit net weight: 23.3g