FRITZ!Box 6840 LTE Service - Knowledge Base

FRITZ!Box 6840 LTE Service

Using a radiator control in the FRITZ!Box home network

An encrypted DECT connection (DECT ULE) is used to integrate radiator controls into the FRITZ!Box home network. You can then use the FRITZ!Box user interface to set up an individual heating program or operate the thermostat over the Internet when you are away from home.

Requirements / Restrictions

  • To use FRITZ!DECT 300, FRITZ!OS 6.60 or later must be installed on the FRITZ!Box.
  • To use FRITZ!DECT 301, FRITZ!OS 6.83 or later must be installed on the FRITZ!Box.
  • The radiator control is mounted on the radiator valve and has been adapted. You can find information on mounting and adapting it in the manual.
  • A maximum of twelve radiator controls can be registered with the FRITZ!Box.

Note:The configuration procedure and notes on functions given in this guide refer to the latest FRITZ!OS for your FRITZ!Box.

1 Establishing a DECT connection

  1. Push the "DECT" button on the FRITZ!Box and hold it down until the "DECT" or "Info" LED on the FRITZ!Box begins to flash.
  2. Press the "MENU" button on the radiator control within 2 minutes.
  3. Select the menu item "FUNK" or "Anmeldung" on the radiator control and then push the "OK" button.
    • If you have a FRITZ!DECT 301, the message "Anmeldung war erfolgreich" appears in the display.
  4. If you have a FRITZ!DECT 300 or Comet DECT, wait until "SUCH" flashes in the display and then press the "OK" button.

The DECT connection is established as soon as the "Radio link" icon in the display of the radiator control lights up continuously.

2 Setting up the radiator control

  1. Click "Home Network" in the FRITZ!Box user interface.
  2. Click "Smart Home" in the "Home Network" menu.
  3. If available, select the option "All smart home devices" in the drop-down list "viewing".
  4. Click the button (Edit) for the respective device.
  5. Configure the desired settings.
  6. Click "OK" to save the settings.

3 Accessing the radiator control over the Internet

You can also operate the radiator control over the Internet when you are away from home. The FRITZ!Box user interface is used to access it: