Circuit board, version E5 v3.0, for use with Cinderella Classic and Comfort models. Not compatible with software versions older than v3.2. Replaces all previous versions E1 to E4. Includes a built-in 12VDC transformer to replace external transformer on models using version E2-E3. For Classic models produced before 2003 or with serial number 03363999, additional parts (Thermocouple article no 100831, Battery cable article no 100720) are required to replace version E1.For toilets equipped with Nidec hatch motor, an additional part (Cable Nidec motor w/o resistance, article no 101462) is required to replace version E5 v1.5-1.10 from the following serial numbers: Comfort CF05E5 1917 412117, Classic CL05E5 1921 205613.