The Homematic IP HmIP-DLD is an intelligent door lock actuator designed for the convenient and secure retrofitting of existing door locks. The system enables electronic control of the locking mechanism and integrates access control into a modern smart home environment. The existing lock remains in place, eliminating the need for extensive structural modifications. Installation is on the inside of the door and is designed for straightforward setup. Once configured, the lock can be easily controlled via the Homematic IP app or compatible smart home components. Individual schedules and automations can also be configured for more convenient daily access. A key advantage of the HmIP-DLD is its seamless integration into the Homematic IP ecosystem. The door lock actuator can be combined with sensors, alarm functions, and other smart devices. This allows for the creation of various security and convenience scenarios, such as automatically locking the front door at specific times. The actuator unit operates precisely and ensures reliable operation of the locking cylinder. At the same time, manual operation with the key remains possible at all times, maintaining flexibility in everyday life. This combination of classic and digital control makes the system appealing to a wide range of users. The build quality meets the requirements of modern smart home technology. Robust materials and a durable construction ensure stable operation, even with regular use. The discreet design blends harmoniously into various living environments and is unobtrusive on the door. The system also offers useful security features for managing access rights and integrating into automated processes. In conjunction with other Homematic IP components, the door lock actuator can become part of a comprehensive home security concept. Operation is clearly laid out and well-suited for both experienced smart home users and beginners. Control via mobile devices simplifies everyday life and allows quick access to the most important functions. Overall, the Homematic IP HmIP-DLD is a modern and functional solution for intelligent door control, distinguished by its easy retrofitting, high system compatibility, and reliable operation.