- Automatic Flush: Activates flush after user stands, with delay settings that vary by sitting or standing position
- Manual Override: Button on the remote allows manual flush if preferred, or for power outage backups.
- Durable Design: Engineered by TOTO for long-term operation with minimal maintenance
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This kit includes the white flush button for your S7/S7A remote (single flush only).
For dual-flush (1.28 GPF/0.9 GPF) toilets please see the TOTO THU855 Auto-Flush Kit.
TOTO THU857 UPC Code: 739268436602.
TOTO THU857 Auto-Flush Kit for S7 and S7A Washlets for Single Flush Toilets (1.28 or 1.6 gpf)
Frequently Asked Questions
• What if my order arrives damaged?
While we take great care in the packaging and handling of orders, we ask that customers inspect all shipments within 48 hours of delivery, and in the rare event that your order arrives damaged, please send us an email with a photo showing the damages (so we can file a claim with the carrier), and let us know whether you prefer a free replacement or a refund.
• Why do you ask for phone numbers during checkout?
Some shipping carriers, especially those handling freight, require a phone number to coordinate your delivery. We respect your privacy and guarantee that any information you provide will never be shared with third parties, except for shipping purposes.
Compatibility: Designed exclusively for TOTO WASHLET+ T40 toilets with single-flush (1.28 or 1.6 GPF) systems, such as Toto Drake toilets. Works seamlessly with WASHLET+ S7A/S7 bidet seats.
Functionality: Provides hands‑free automatic flushing once the user stands up, improving hygiene and convenience. Also includes a manual flush button integrated into the remote unit for flexibility.
Exclusions: Not compatible with dual‑flush systems (e.g. THU855, THU766), nor with Washlet models like S550e, S500e, or round‑seat S7A/S7 configurations.