Features: 1. Door lock can be used to unlock the door, supports EM or SM compatible cards, high-speed long-distance card reading, internal and external dual card reading. 2. Powered by 4 AA batteries (not included), long lifespan, can be used for over a year. 3. Simple installation, no wiring required, safer and more convenient to use. 4. When the battery is depleted, you can use the standard mechanical key to unlock the door, ensuring quick access. 5. Supports adding up to 970 ID card users, providing great convenience. 6. Integrates access control and smart lock main engine. 7. Compatible with all building intercom and access control system unlocking signals. 8. Equipped with anti-pry alarm and unlocked alarm in time. 9. Automatically locks after the door is closed. Lock status is indicated by sound and light prompts, and the door closes without collision or noise. 10. The integrated structure is designed to prevent damage, with a reasonable circuit and mechanical design, making it easy to use and durable. 11. Infrared controller and management card are used to manage the lock's sensor card. 12. Widely used in homes, offices, schools, hotels, factories, warehouses, etc. Specifications: Condition: 100% Brand New Item Type: Door Lock Material: Stainless Steel Color: Silver Power Supply: 4 x AA batteries (not included) Battery Life: More than 1 year Remote Control Power Supply: 1 x CR2025 battery (built-in) Number of Cards: 970 Users Static Current: <38mA Operating Current: <350mA Operating Temperature: -40℃ - 70℃ Working Humidity: <95% Unlocking Mode: Internal rotary knob, external metal key, external ID card, internal ID card RF Card Unlocking Response Time: <0.5s Card Reading Distance: Approx. <20mm/0.8in Automatic Locking Error: Supported, delay 10 seconds Door Closing Induction Anti-Interference: Supported, delay 0.5s Package List: 1 x Lock Body 1 x Lock Catch 1 x External Swipe Cover 1 x Lock Head 3 x Key 1 x Installation Accessories Package 2 x ID Card 1 x Management Card 1 x Infrared Controller 1 x Instruction