Check History Records: The open/close record history is displayed in the App, enabling real-time monitoring of your property security. Requirements for Installation: Please note that the lock body thickness should not exceed 28mm to ensure proper IC card sensing and smooth unlocking. Reliable Fixation: Adhesive stickers and screws provide secure attachment, ensuring the lock body and buckle fit firmly on the cabinet door for safe use. High Strength Material: Durable construction safeguards your property. Ultra-long Battery Life: Battery lasts over one year, reducing the need for frequent replacements. This enhances convenience and lowers maintenance costs. Smart Cabinet Door Lock Unlock with IC Card Unlock with NFC Wide Range of Applications 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: -20C to 60C 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 will remain unlocked. Replace the battery promptly. NOTE: A Bluetooth gateway is required; please purchase separately. Color: Black Material: Plastic + Metal Package Contents: 1 x Bluetooth Lock Only the items listed above are included; other products are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error tolerance is +/- 1-3 cm.