Single cylinder 5000 Single cylinder anthracite from Burg-Wächter: ideal for all house and flat doors. Smartlock secuENTRY Home: simple, secure, convenient. To operate your secuENTRY Home door lock 5000, all you need is the secuENTRY KeyApp. The app is free of charge for both iOS and Android smartphones. Thanks to state-of-the-art Bluetooth 5.2 technology with AES encryption, the system offers optimum security and a wide range. Installation without any measures. Installation of the electronic door cylinder is also very smart, as it is ready for use in just a few minutes. Simply undo the forend screw (under the latch and deadbolt) on the inside of the door and remove the old cylinder. Then insert the secuENTRY Home cylinder and set to the correct door thickness. Tighten the forend screw and your Smartlock is fitted. Generally suitable for all door thicknesses up to 118 mm. Further technical features: Number of possible E-Keys: 5 pieces. Memory protection without battery voltage: yes. Secure AES radio encryption: yes. Code options: 1,000,000.