Hey!

I want to implement the following control-strategy:

• If the room temperature is below 19°C, the heating systems should be on until the temperature is 25°C
• Once the temperature is 25°C, the heating system should be switched off until the temperature is again below 19°C

I think this control strategy is often called "hysteresis" (see http://nearbus.net/wiki/images/c/c0/H...)

Is there an integrated module or do I have to use EMS?

Thank you very much for your help