Smart Cylinder Lock European Style Electronic Door Lock Digital Keypad Code RFID Card Keyless Lock For Home Hotel Apartment.    Scramble Passcode:  Aryclic Touch Keypad  Password support 4-8 digitals  Support the Anti-Peeping Virtual Password enter, Input the random passcode before or after the correct password, This makes your door much secured.    Mechanical Key Unlock  Mechanical key & External power supply interface as spare in case the batteries is dead.    Long Life Battery Caring  The Smart lock is an advanced smart lock offering Airbnb integration and high-tech automated features. The automatic lock feature can adjust the time for the ultimate security setting. The long life battery ensures the quality utilizing. With the easy getting change of batteries, it saves up and be more convenient when power off.    How To Install:  -Simply use a hex screwdriver to install in 3 Mixer. Each lock comes with rubber spacers to help create the most secure fit. The dimensions are included in the diagram below to show the actual size.  Suitable Cylinder Types  Our European standard smart lock always suits for deadbolt and doorknob as shown in the “mark” symbol. You are ready to go and install it to replace your existing locks, simply change the new lock with our detail instruction. Specification:   standard: European Standard 30/30,35/35,40/40, 60/40,75/40;  Unlock: RFID Smart Card / Password /Key;  Color: Silver/Black;  Battery Type: AAA Battery;  Battery Replacement: Replaceable;  Materials: 304 Stainless Steel + Aluminum + Plastic;  Waterproof Grade: IP44;  Automatic Lock: Yes;  Adjustable Door Lock Time: Yes;  Low Battery Reminder Function: Yes;  Working Temperature: -30-60 degree.    Package list:  1 × a lock cylinder ,  1 × a hex screwdriver ,  1 × a page of Installation Guide,  2 × mechanical Key,  3 ×  RFID cards.