Where should I mount the thermostat transmitter for best performance?

The transmitter should be mounted on a flat wall at a recommended height of 1.5 m above the floor. Do not mount it in recesses, shelves, behind curtains or doors, or above or near heat sources, and avoid direct solar radiation and drafts. If thermostatic radiator valves are present in the reference room, set them to their fully open position. (Page 8)