TOTO Auto-Flush Kit for Washlet S7A/S7 - Dual Flush

TOTO Auto-Flush Kit THU855 for Washlet S7A / S7 (Dual-Flush Toilets)

Upgrade your WASHLET+ setup with hands-free convenience using the TOTO Auto-Flush Kit THU855. Designed as an easy-to-install addition for compatible WASHLET+ T40 dual-flush toilets, this kit enables automatic flushing immediately after every use. Once paired with a compatible toilet and S7A or S7 series WASHLET seat, the system automatically triggers a flush when the user stands up and moves away—keeping your toilet clean, fresh, and consistent without manual effort.

Perfect for homeowners looking to add seamless, touchless auto-flush functionality to dual-flush TOTO WASHLET+ T40 toilets paired with S7A or S7 series bidet seats.

TOTO THU855 Specifications and Features

• Touchless automatic flush triggers automatically when the user rises and steps away for maximum daily convenience
• Dual-flush performance engineered to support both 1.28 GPF full flushes and 0.9 GPF light flushes automatically
• Seamless WASHLET+ integration connects directly with compatible S7A and S7 bidet seats and T40 toilet systems
• Easy internal tank installation mounts neatly inside the tank without disrupting your bathroom's clean exterior design
• Manual flush retention keeps the original tank lever fully functional for flexibility whenever needed