Toto Auto Flush Kit for Washlet+ Dual Flush System Toilets Type AThe TOTO Auto Flush Kit is an easy to install updgrade for compatible WASHLET+ T40 toilets. This model is designed to work with Dual Flush WASHLET+ toilets only. When paired with the corresponding WASHLET+ toilet and Auto Flush WASHLET, the Auto Flush kit provides a hands free automatic flush after every use. No need to touch buttons or handles, and never worry about someone forgetting to flush. Provides a hands free automatic flush after every use