This connects to your existing boiler and the HEAT4 system control box
This connects to temperature sensors in the rooms you want to control and also the HEAT4 tablet computer
These are placed in the rooms you want to control and outside. They send the information back to the control box
Always running, the HEAT4 software allows you to change the temperature in real-time, or use the diary function to shedule heating programs
HEAT4 uses the outside temperature to make sure the heating switches on at precisely the right time so no energy is wasted