All products from the HX system are compatible with each other and can be freely supplemented and expanded. The HX Duo wireless doorbell set is a value set consisting of two receivers. The larger receiver serves as a stationary unit, while the other acts as a mobile receiver with a belt clip. The HX system features an easy-to-use self-learning function for adding additional components. To extend the range, one or more range extenders can be connected. Additional transmitters, such as the HX wireless motion detector or the HX wireless passage detector, can also be integrated into the system. To avoid interference with other wireless transmitters, the HX system offers 256 frequencies that the device learns automatically. The HX Duo wireless doorbell set includes a weatherproof transmitter (IP44) with a nameplate, which is splash-proof and already comes with a battery.

The volume of the doorbell can be adjusted to four different levels, with the highest level reaching 88 dB (A) for the larger receiver. The volume of the mobile receiver is approximately 82 dB. The receivers can play eight different melodies. When using additional transmitters, each transmitter can be assigned a different melody (e.g., front door/back door).

Visual call signal: Both receivers display a visual call signal corresponding to the melody, with the mobile receiver indicating this with a red signal and the larger receiver with a blue signal. It is possible to turn off either the visual signal or the sound (for the larger receiver).

Installation: Both doorbells come with a wall mount for easy installation.