YALE HS-K LINUS CYLINDER - Compatible with Linus Smart Lock. Yale recommends you install your Linus smart lock along with the Yale HS-K Linus cylinder. A cylinder specifically designed for use with Linus Smart Lock. A perfect combination that guarantees the perfect operation of the set. WIDE VARIETY OF MEASURES - To match the dimensions of your new HS-K Linus cylinder, Yale recommends measuring the inner and outer dimension of the current cylinder from the center of the cam (see image). IMPORTANT: To fix the Linus unit on the new cylinder, add 5mm to your inner size. SAFETY AND PROTECTION - Patented high safety double clutch cylinder. Palette designed for optimal mooring with the Linus smart lock. Reversible wrench with 7 active pythons +2 sensors according to EN13030. Anti-bump, anti-drill, anti-pick protection. SIMPLE INSTALLATION - 1. Remove the fixing screw from the cylinder below the locking bolts. 2. Insert the key inside the door. 3. Turn the wrench to align the cam with the cylinder 4. Extract your current cylinder. 5. Insert your new HS-K Linus cylinder and screw the fixing screw again. Your door will be ready to install your new Linus Smart Lock. 2 MECHANICAL KEYS INCLUDED - 2 physical keys are included so you can continue to use the mechanical opening in case you don't want or can't use the Yale Home Ao app the Yale Smart Keypad. Includes security card to protect against duplicates., Weight: 1.10231131 pounds, Manufacturer: Yale