Enhance your security with this advanced no lock hole Door Lock, designed to eliminate traditional keys and locks by offering smart, keyless entry through multiple convenient methods. Crafted from durable stainless steel, this high-quality electronic door lock provides reliable and long-lasting performance for residential, office, hotel, garage, and corridor doors, delivering both security and ease of use. Key Features: · Keyless Design with No Lock Hole: Completely abandons conventional keys, allowing you to lock and unlock your door remotely via the dedicated Phone APP (Tuya / SmartLife) or remote control, ensuring real security and convenience. · Three Flexible Unlock Modes: Choose from Phone APP unlock, Remote Control unlock, or convenient indoor Button unlock, providing versatility to fit your lifestyle and security needs. · Dual Core and Dual System Technology: Ensures faster unlocking response times and enhanced system stability for smooth and reliable operation. · Enhanced Security with Digital Conversation System: Remote controls utilize encrypted digital signals that cannot be decoded or duplicated, offering robust anti-theft protection and peace of mind. · Premium Stainless Steel Construction: Built to last with strong, steady stainless steel material that is power-efficient with low battery consumption, guaranteeing durability and longevity. · Backup Battery Support: In case the main batteries run out, a backup battery option prevents lockouts, ensuring you never get trapped outside due to power failure. · Wide Application: Ideal for various door types including office doors, home entrances, hotel rooms, anti-theft doors, corridors, wooden doors, and garage doors. Specifications: · Remote Control Distance: 0-20m (open space) · Power Supply: 4 x 12V 27A batteries for remote controls (included), 1 x 23A 12V battery (included) and 4 x AA batteries (not included) for door lock · Unlock Current: 120mAh · Battery Life: Up to 16 months standby mode for main batteries · Transmission Frequency: 433MHz (±500KHz) · Operation Range: Within 20 meters · Unlock Modes: APP unlock, Remote control unlock, Indoor button unlock · APP Support: iOS and Android compatible · Working Temperature: -10°C to 60°C · Working Humidity: 20% - 80% · Lock Tongue Moving Distance: 22mm · Material: Stainless Steel · Item Size: 137 x 77 x 37 mm (5.39 x 3.03 x 1.45 in) · Item Weight: 670g (23.67oz) · Package Size: 23.0 x 17.0 x 6.5 cm (9.05 x 6.69 x 2.55 in) · Package Weight: 1056g (37.24oz) Package Includes: · 1 x Door Lock · 1 x Bottom Gusset Plate · 1 x Door Bolt Holder · 1 x Screw Kit · 1 x 23A 12V Battery · 4 x Remote Controllers · 1 x USB WiFi Adapter · 1 x English-Chinese User Manual This smart door lock combines cutting-edge technology with robust construction to provide an effective and user-friendly security solution. Its multi-mode unlocking capabilities, encrypted remote controls, and power-saving features make it an excellent choice for modern security needs in homes and commercial environments.