The Inside Sensor Box tis the essential device for the management of the 3 operational modes, and more specially for the Energy saving functions. It provides an interface for 8 zone switches or a maximum of 2 interior temperature sensors. In the case of 2 Building Controllers used for 16 zones, you can connect 2 Inside Sensor Boxes. To guarantee a proper operation for the Animeo IB+ system, all the measured values are filtered respectively and checked on plausibility before being sent to the Building Controller.