Air Quality Sensor 1.3 Analog values / ESPHome

Hi, I am trying to integrate this sensor in Home Asssitant using ESPHome. I connect it to the analog port (no other components used) of an ESP32 (M5Stack Core) and read it’s value. The value I obtain is 0.07 or 0.08 V Haven’t seen any other values yet. In the documentation I read that values should be in the range < 700. Has anyone successfully read the values using this method ? Any calculations/corrections I should do ? Thanks for your help !