Uninterrupted Security: Stay secure during power or Internet outages with 4G connectivity and a 24-hour built-in battery for continuous video protection. Device Compatibility: Compatible with selected eufy Security devices, including PoE cameras, eufyCams, video doorbells, and sensors. Dual-Mode Flexibility: Supports both Wi-Fi and PoE connections, ensuring reliable network performance and seamless integration with your exisitng eufy Security system. Massive On-Device Storage: Secure your footage with 32GB built-in storage, expandable up to 16TB. Enjoy faster response times and complete data privacy with local processing and no need for the cloud. Advanced Al Upgrades: Add eufy AI Core to unlock advanced Al-powered features for a truly comprehensive security experience. Dual-Side Detection: Supports both left and right-side installation for quick, error-free setup. Convenient Bypass Button: Simply press the bypass button to temporarily deactivate the sensor, allowing you to open your door without triggering an alarm. Your other sensors remain active. Long-Lasting 5-Year Battery Life: Features a CR123A battery with up to a 5-year lifespan, meaning less maintenance for you. Pet-Friendly Detection to Reduce False Alarms: Differentiates between humans and pets, reducing false alarms for pets up to 80 lb. Easy and Versatile Installation: Mounts effortlessly on walls or corners with simple height setup and no extra adjustment required.