Check History Records: The open/close history is displayed in the app's history records, enabling real-time monitoring of your property security. Requirements for Installation: The lock body thickness should not exceed 28mm to ensure proper IC card sensing and smooth unlocking. Reliable Fixation: Secure attachment via stickers and screws ensures a firm fit between the lock body and buckle, enhancing safety during use. High Strength Material: Provides reliable protection for your belongings. Ultra-long Battery Life: Operates for over one year on battery power, reducing the need for frequent replacements, improving convenience, and lowering maintenance effort. Smart Cabinet Door Lock Unlock with IC Card Unlock with NFC Wide Applicable Scenes Remote Unlocking via App Supported Unlocking Methods: Mobile Phone Bluetooth, Card Number of Users Supported: Up to 250 card users Local Management Function: Supported Compatible App: Available for download Power Supply: 4x AAA alkaline batteries (not included) Working Current: Less than 50mA Working Temperature: -20°C to 60°C Relative Humidity: 20% to 85% (non-condensing) Antistatic Ability (ESD): Contact discharge 8KV, Non-contact discharge 15KV Recommended Use Scenarios: Wardrobe, bedside table, shoe cabinet, drawer, etc. Notice: 1. 4x AAA batteries are not included; please purchase separately. 2. When the battery is depleted, the cabinet door lock remains in the open state; replace the battery promptly. Note: A Bluetooth gateway is required (sold separately). Color: Black Material: Plastic + Metal Package Contents: 1 x Bluetooth Lock Only the items listed above are included; other accessories are not included. Note: Lighting effects and display differences may cause slight color variations between the image and the actual item. Measurement error allowed is +/- 1-3 cm.