SMART PIR MOTION DETECTION: Built-in PIR sensor to instantly receive alerts and push notifications. Customize your detection with 5 sensitivity levels, motion zones, and scheduling. Avoid unnecessary alerts and keep your more efficiently. ADVANCED VOICE CONVERSION TECHNOLOGY: Ideal for the elderly, children, or women alone. Our doorbell features a voice converter and two-way audio with a built-in noise reduction microphone and speaker, ensuring clear, real-time conversations from any location. SUPERIOR HD VIDEO & IR NIGHT VISION: Capture everything in detail with a full HD 1920x1080 camera that supports IR night vision up to 33 feet. your home's security from daylight to darkness with crystal-clear picture quality. DUAL-BAND WiFi CONNECTIVITY: Supports both 2.4G Wi-Fi networks for faster, more stable wireless connections. Wake the device remotely via smartphone within 1 second, making it more convenient in daily use. LONG-LASTING REMOTE MONITORING: Keep an eye on your doorstep with timely motion alerts and video bell rings. Features a robust 4000mAh lithium polymer battery that lasts 5-8 months without wired power, ensuring consistent safety and convenience., Weight: 0.5952481074 pounds, Manufacturer: Tuidzljd