

The New Auto-Flush Kit For Compatible TOTO Toilets
The TOTO Auto Flush Kit is an easy to install upgrade for compatible WASHLET+ T40 toilets. This model is designed to work with dual flush 1.28 GPF and 0.9 GPF WASHLET+ toilets only.
When paired with the corresponding WASHLET+ toilet and Auto-Flush compatible 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.
THU855 Auto-Flush Kit Compatibility
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New auto-flush kit for TOTO Washlet S7A and S7 bidet seats.
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This kit is only compatible with dual-flush TOTO Aquia IV Washlet + (T40) toilets.
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Not compatible with TOTO S550e or S500e Washlets.
The auto flush unit is compatible with my toilet seat, it’s just not compatible with my toilet flush system. And there are no directions that advise what kind of compatible flush system would work with it. So, I can only caution a buyer on this factor.
I was grateful to Premier Bidets for getting me the new S7A bidet and the updated Flush Unit. I'm just in the process of installing them -- and I've had a hard time to find installation instructions. All the ones that pretend to be for the THU855 are really for the last generation, which are very different. I finally found one Toto video on YouTube, which seems to do the trick. But Toto needs to update what they include with the new products. Hope all this technology fits together well. To be continued . . . .