The AQARA AL-D04E U200 Adjustable Cylinder is an accessory specifically designed for the Aqara Smart Lock U200, combining high security standards with flexible use. This silver cylinder weighs 580 grams and has compact dimensions of 100 × 30 × 50 mm. Made of hardened steel and corrosion-resistant alloy, it offers long-lasting use and superior durability. With EN 1303 security certification, it elevates your home security to the highest level. The key technical feature is its adjustable structure. The inner length can be adjusted between 30-65 mm, the outer length between 32-67 mm, providing a total length range of 62-132 mm. This ensures perfect fit for doors of different thicknesses. Thanks to its modular design, extension can be made on both sides relative to the door's center line. The package includes 4 keys, mounting screws, a hex screwdriver, and a comprehensive installation guide. Additionally, extension parts and reinforcement rods keep the cylinder stable under all conditions. This adjustable cylinder delivers optimal performance when used with the Aqara U200 smart lock. It can be easily installed on all doors compatible with standard euro profile cylinders. The emergency function allows you to unlock the door from the outside even if a key is inserted on the inside, ensuring you are always prepared for unexpected situations. Whether installing on a new or existing door, this cylinder completes your smart home experience with security and flexibility. Technical Specifications: - Brand: AQARA - Model Number: AL-D04E - Color: Silver - Weight: 580 g - Dimensions (WxDxH): 100 × 30 × 50 mm - Adjustable Inner Length: 30-65 mm - Adjustable Outer Length: 32-67 mm - Total Length Range: 62-132 mm - Number of Keys: 4 - Material: Hardened steel and corrosion-resistant alloy - Security Standard: EN 1303 certified - Compatibility: Aqara U200 smart lock