Abstract: The invention relates to a bed base (7) with at least one motorized slat module (3), comprising at least one slat row (32) for carrying a mattress, and an electrical motor (31) and mechanical transmission means for moving the slat row (32) in height direction of the bed base, and an electrical control circuit and a control means (5) for controlling the motor (31). The invention also relates to a motorized slat module (3) and a ted (1).