All items from the HX system are compatible with each other and can be easily supplemented and expanded. The HX Curve wireless receiver features an integrated Schuko socket with child safety, ensuring you don’t lose any outlet space. This also makes installation easier, as you only need to plug your chime into the socket. The HX system has a user-friendly self-learning function for adding additional components. To increase the range, one or more range extenders can be connected. Additional transmitters, such as the HX wireless motion detector or HX wireless door sensor, can also be integrated into the system. To avoid interference, the HX system offers 256 frequencies that the device learns automatically. Installation: The chime only requires one outlet due to the socket connection. Volume control: The volume of the chime can be adjusted in 4 different levels, with the highest level reaching 90 dB (A). The receiver can play 8 different melodies. Mute function: The chime can be easily and quickly muted using the on/off switch. Call distinction: When using additional transmitters, a different melody can be assigned to each transmitter (e.g., front door/back door).