Toto IoT EFV CONCEALED,TOILET,1.28G TET2LBI4#SS

Concealed. The valve body mounts behind the wall and only the sensor plate shows in the finished room, so you need an accessible chase or a carrier wall behind the fixture. If the piping runs on the face of the wall in your restroom, an exposed-style EFV is the one to order instead.

Match the flush volume to the bowl. The TET2LBI4#SS delivers 1.28 gallons per flush, so it needs to go on a flushometer-valve (tank-less) bowl rated for 1.28 gpf. Pairing it with a bowl designed for 1.6 gpf or a 3.5 gpf older bowl will leave you with carry problems, and a tank-type bowl cannot use a flush valve at all.

Order it as TOTO TET2LBI4#SS. The #SS suffix is the finish code on the TOTO ordering system, so the full designation including the suffix is what you give a distributor to get the right trim.

Both flush hands-free, but an IoT electronic flush valve is network-connected, so flush activity and valve status can be monitored remotely rather than only at the fixture. For a facilities or MRO buyer standardizing a large restroom group, that's the reason to pick the IoT version over a plain sensor EFV; for a single one-off replacement the added connectivity usually isn't worth the specification work.