Voice Control, for voice control and real time monitoring. Free your hands. View the Video In Real Time, You can check the situation at your door anytime and anywhere through the mobile APP. 4.3-Inch Display Screen, Press the doorbell display to display the picture, and the picture outside the door is clear at a glance! 5M infrared night vision distance, Built-in ICR IR filter. Automatically switch day and night mode according to the brightness of the surrounding light. Intelligent night vision mode, even in the dark at night can see clearly. PIR Human Sensor, Equipped with a PIR human body induction sensor, it can detect an oncoming human body at a distance of up to 2 meters, sense abnormal movements, quickly wake up to capture and push an alarm message to the mobile phone., Manufacturer: QAXRZCUCD