What’s the difference between a TLC 30 Eco and TLC 30 Advance?

A TLC 30 Eco does not have a digital display, it simply has a liquid in glass thermometer to display the temperature. The temperature can be adjusted via a dial. The TLC 30 Advance features a digital temperature display and the temperature is adjusted using buttons on the display. Neither the TLC 30 Eco or Advance have a humidity display or any humidity control.