EVERSECU CS621DR

[Motion Detection & Auto Tracking & Real-time Alerts]: this PTZ dome surveillance camera adopts a highly sensitive motion sensor. If some people invade your home, this security camera will track the motion and record every single move, together with a VOICE ALERT if needed. 【Two-Way Audio & Voice Alert】 Built-in microphone and speaker, you can have a conversation between you and your visitor, you can also create a sound alert to scare away the invader via the speaker.