About This

🛡 Invisible Double Security: Installs inside your door, completely hidden from exterior view. Blocks lock-picking tools, foil guns, and key duplication attacks, reinforcing existing locks as a fail-safe barrier against break-ins
🔒 Auto-Lock & Dual Systems: Smart sensor auto-locks in 5s/2mins (adjustable mode), eliminating forgotten-lock anxiety. Dual-system redundancy ensures access via main or emergency backup if one fails
⚡ 3-Minute Universal Installation: 3M industrial adhesive (200kg pull resistance!) or optional screws. Fits 99% doors—wood, steel, glass, left/right swing, inward/outward opening—no drilling needed
🔋 Smart Battery Management: Low-power alerts + auto-unlock before full drain. 8-month battery life (3xAA alkaline). Remote keys last 3 years (CR2025, 20 uses/day)
📱 Effortless Keyless Control: Voice-guided operation + 30 remote keys with tiered permissions. Easily delete lost keys without replacing locks. Hide backup keys outdoors (e.g., mailbox/car) for emergencies