Sloan OEM part. Flushometer control module kit. In addition to a repair on a current Optima water closet flush valve, this module assembly is used to convert old (pre-2003) EBV-26-A-C Optima Plus (black module) toilet flushometers to the current G2 style electronic control. Self adjusting IR sensor. Uses 4 AA batteries (not included) which typically last between 3 and 5 years depending on usage. Does not include cover or security cover wrench.