eufy Familock S3

Palm Vein Unlocking: Unlock with advanced security and ultra-fast recognition in just 0.6 seconds. Forgery-resistant palm vein technology scans your unique vein patterns for added protection. All data is securely stored locally on the lock—keeping your privacy in your hands. All-in-One Smart Lock: This smart lock features a 2K HD night-vision camera, a 150° wide-angle video doorbell, and a smart lock with real-time alerts—keeping your home secure. Dual Power Supply System: With two batteries, enjoy up to 5 months of total usage, plus 4 AAA backup batteries for uninterrupt