American Standard Selectronic Gooseneck Touchless Faucet, Base Model, 0.5 gpm/1.9 Lpm - AMS-605B135

The 605B135 is the base faucet only. Selectronic is a modular platform: you pick the faucet style, then a control box (solenoid or thermostatic mixing valve), then a power supply from five options, and each of those components is sold separately. So a working install is at least three line items, not one. Plan the control box choice first, since that decides whether you are mixing temperature at the faucet or feeding it tempered water from elsewhere.

It is a single-hole faucet, but it covers multi-hole decks with an optional 4-inch or 8-inch deck plate, ordered separately. Drop it straight into a single-hole deck as-is; for a 4-inch centerset or 8-inch widespread cutout, add the matching deck plate so the outer holes are concealed.

0.5 gpm (1.9 Lpm) is a handwashing flow rate, and this faucet is built for commercial use. That works for public and employee lavatories where the fixture only has to wet hands and rinse soap. If you are filling mop buckets, pots, or deep sinks, 0.5 gpm will feel painfully slow and you want a higher-flow faucet instead.

A safety timer shuts the water off after 55 seconds, so a bag on the deck or a stuck sensor reflection cannot run the bowl over or waste a tank. The infrared sensor otherwise starts and stops flow on hand motion, and it can be programmed with an optional remote control if you want to adjust behavior after install.

Yes, it has an auto purge function. The faucet can be programmed to open at a set interval after the last use to clear the faucet body and supply lines of standing water. That matters in schools on summer break, seasonal hotel wings, and vacant tenant suites where low-use fixtures are the water quality problem.

Pick by where the temperature is set. The solenoid control box just opens and closes the water, so you need tempered water arriving at the faucet from a master mixing valve or a dedicated tempered supply. The thermostatic mixing valve box blends hot and cold at the fixture, which is what you want when hot and cold both run to the sink and there is no upstream tempering. Both are separate line items from the faucet.

That is what the modular platform is for. The faucet body stays the same part number while you vary the control box and the power supply per location, choosing from five power options, so a restroom with an accessible outlet and one without can both run the same faucet. Ordering stays a fixed faucet SKU plus the two components that change.

The faucet measures 17.126 x 10.394 x 4.252 inches and weighs 3.902 pounds. The gooseneck shape gives you clearance under the spout for washing hands or rinsing, more than a low-arc lavatory faucet does. Map those three numbers to your deck before you commit if the sink sits under a tight mirror or shelf.

Chrome, ordered as 605B135.002. Chrome is the standard finish for commercial lavatory specs and it will match most existing polished trim in an institutional restroom, so a fleet-wide swap across a building stays consistent.