• For a ductless setup, you will require 1 Cello Sensor per ductless evaporator, window AC, or portable unit.
  • For a baseboard setup, you will require a minimum of 1 Cello Sensor per floor.
  • For a baseboard and ductless setup, you will require 1 Cello Sensor per ductless air handler plus 1 Cello Sensor for 1 or multiple baseboard zones. Please call Cello support for further clarification.