This Wi-Fi Video doorbell with ringer allows you to answer the door when you’re not even home! This wifi video doorbell allows you to monitor who and what arrives at your door through the use of your phone. Not only will this help prevent thieves and unwanted visitors but it will give you peace of mind while your out running errands or at work. It can even trigger notifications to be sent to your phone when motion is detected out the front of your property. Note: Requires 2.4GHz band on your home router. Camera requires 12VDC power connection (power supply included), ringer requires 3xAA batteries. Features See and speak with visitors via your phone Works like a regular doorbell when your phone is turned off or not nearby Built in motion sensors triggers and sends alerts to your phone Camera allows user to take photos through the doorbell Video recording to capture any incident that may occur Built in night vision to capture activity round the clock Remote unlock your home SPECIFICATIONS: Main Unit Camera: 1.2million pixels Maximum number of users: 4 users at the same time Power Supply: AC/DC 8-36V WiFi Security: WPA/WPA2 Outline Dimensions: 135 x 65 x 28mm Sub Unit Battery: DC 4.5V (1.5V/AA/LR6*3) Standby Current: 0.5mA Max Working ≤Current: 200mA Max Volume: ≥80dB (distance:0.3m) Wireless Receiving Frequency: 433.92MHz±250KHz Receiving Distance in open area: ~80m (open area)