Add Zigbee devices in HA

To add the Zigbee service:

1. Click on Settings - Devices & services - ADD INTEGRATION - search for ZHA - select "Zigbee Home Automation."

2. Then, in the pop-up window, choose EZSP for (Radio Type) and configure the (Serial Port Settings) with Serial device path: /dev/ttyAS3( iSG should fill in /dev/ttyUSB0; iSG MAX should fill in /dev/ttyAS3, If you are not sure how to distinguish your iSG model, please refer to this), Port speed: 115200, and select the third option for Data flow control, then submit. See screenshots below:

3. After the Zigbee service is configured, you can add Zigbee devices in Home Assistant.

4. Finally, go back to iSG "Device" → "+" → "Home Assistant," to select the devices you want to add to iSG.