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FRITZ!DECT 500 often loses its connection to the FRITZ!Box

The DECT connection between an LED light FRITZ!DECT 500 and the FRITZ!Box drops frequently. The connection status "Not connected" is displayed in the menu "Smart Home" of the FRITZ!Box user interface.

Note:All instructions on configuration and settings given in this guide refer to the latest FRITZ!OS for the FRITZ!Box.

Simply proceed as described below. After each measure, check whether the problem is solved.

1 Installing the latest FRITZ!OS for the FRITZ!Box

  1. Install the latest FRITZ!OS on the FRITZ!Box.

2 Updating the firmware of the LED light

  1. Click "Home Network" in the FRITZ!Box user interface.
  2. Click on "Mesh" in the "Home Network" menu.
  3. Click "Perform update" next to the respective device.

3 Turning off other base stations

  1. For testing purposes, turn off other base stations in the vicinity of the FRITZ!Box.
  2. If the problem no longer occurs, switch off the base station or place it farther away from the FRITZ!Box.

4 Disabling "Reduce DECT field strength"

  1. Click "Telephony" in the FRITZ!Box user interface.
  2. Click "DECT" in the "Telephony" menu.
  3. Disable the option "Reduce DECT field strength" in the section "Radio Field Strength".
  4. Click "Apply" to save the settings.

5 Removing USB 3.0 devices from the FRITZ!Box

If you are using a FRITZ!Box with USB 3.0 support and a USB 3.0 device is connected, the USB device may interfere with the DECT connection:

  1. For testing purposes, remove all USB 3.0 devices from the FRITZ!Box's USB ports.
  2. If the problem no longer occurs, a USB device was affecting the Wi-Fi connection. Eliminate the interference caused by the USB device.