This package is required for the Zigbee for Domoticz plugin. It provides configuration files to optimized the pairing and behaviour of Zigbee devices connected to the plugin. This package is part of the Zigbee4Domoticz requirements and should be installed defacto.
sudo python3 -m pip install git+https://github.com/zigbeefordomoticz/z4d-certified-devices
sudo python3 -m pip install z4d-certified-devices --upgrade