The window cleaning robot RCW 2 Extra+ replaces manual window cleaning and automatically ensures a clear, streak-free view. Thanks to powerful vacuum technology, the RCW 2 Extra+ guarantees a secure grip on all smooth surfaces, making it ideal for large and hard-to-reach windows as well as mirrors. Systematic navigation and two sensors for frame and object detection ensure quick and reliable cleaning. The two rotating discs with microfiber cleaning pads simulate a manual wiping motion for spotless results. Two ultrasonic spray nozzles create a fine mist of cleaning solution that is applied precisely and without dripping onto the glass. Four automatic cleaning modes and a manual mode can be selected based on the cleaning task and conveniently controlled via remote. LED signals and voice output provide status updates on the device at any time. The included window cleaning solution RM 503 effectively removes dirt, dries streak-free, and allows rain to bead off more quickly for long-lasting cleanliness. Even in the event of a power failure, the RCW 2 Extra+ remains attached to the glass, thanks to its emergency battery and safety cord.