Before you buy a smart doorbell, you should talk to your electrician. Although the installation itself it very easy there are some obstacles you have to solve before buying. 

  1. Please check that your bell transformer brings between 9,6-15W. If you have a standard 8V / 1A transformer, this will also work but here the sound of your old bell can change.  A Trafo 12V / 1A or 8V / 1.5A are perfectly suitable. 
  2. Hold your smartphone in front of your existing bell and take a photo of your partner standing in front of the door at a normal distance. If they see only the person's belly, simply replacing the old bell is difficult. To ensure that the person ringing the doorbell can be satisfactorily recognised within the range of vision of the elements app, the doorbell should be mounted on the house wall at a height of 1.50 m if possible. If you have steps directly in front of the house door, the doorbell can also be installed lower, as the person ringing the bell is lower than the house door.
  3. Do I have enough space in the old bell to install the Power Adapter Kit? This becomes important because only a properly installed bell does not hum even under continuous load.
  4. Do I have enough internet bandwith in front of the door – even if my family surfs the internet? Some routers allow the prioritisation of devices. (The WI-FI should never be turned off.)