SPEED SWITCH. Control panel for installation on board the machine, it is equipped with a 4-position rotary switch (three speeds + stop). It can be installed on the ESTRO FL, FA, FU, FB versions, this control panel allows switching of the speed operation of the fan coil as well as starting and stopping. The control is supplied complete with cables for wiring to the fan coil terminal board. Designed for those who need to heat a single large room. Excellent for those who need to install fan coils in large halls, taverns, etc.