SAFE and FLEXIBLE STORAGE: Imou adopted advanced encryption technology to provide bank-level data protection. Only you have access to the images & videos stored on a Micro SD card (up to 256GB), the Imou Cloud, or a network video recorder(NVR). HUMAN DETECTION WITH SPOTLIGHT & SIREN: When an intruder is spotted, the human detection technology quickly picks out human targets, then motion tracking focuses on the target and follows it. The built-in spotlight turns on and the siren activates, scaring away unwelcome visitors. 2-WAY AUDIO & SOUND DETECTION: Built-in speaker and microphone allow you to interact with pets and family. Instant notification will be sent to your smartphone when the baby monitor detects baby crying, dog barking, or other abnormal sounds, keeping you aware of what's going on at home/office/store from anywhere. SMART TRACKING: One-click to enable smart tracking, the wifi camera will focus on and follows moving people or objects, records real-time videos and sends instant alerts to you, and you can check the recordings with a Micro SD card or the Imou Cloud. 1080P FHD & NIGHT VISION: 33ft night vision mode automatically switches on and off. Advanced IR algorithms provide visual verification with 1080P Full HD videos and superior clarity with rich details even in complete darkness.