The Title-24 you and I have to deal with states 'Manual 'ON'
"Occupancy Sensor" - auto 'OFF' w/ no 'ON' over-ride. However manufacturers call this a
Vacancy Sensor. The sensor has to sense the 'vacancy' and turn off on its own. Unlike a regular 'Occupancy Sensor' that would turn on when you walk in to (Occupy)the room.
Google
vacancy sensor and you get a residential title-24 compliant product.
Do the same for
Occupancy Sensor, and you get a wide range of products that may or may not comply with title-24. (Residential or non-residential both can be found
here.)
When the dopes who wrote this code worded it - manufacturers did not even have products that complied with it. Once the did, they called it something else to differentiate this type and function. Occupancy sensors were widely used to cover title-24 in commercial bath rooms before and still are, but were not required to be "Manual ON". If you ask the counter guy for an "Occupancy Sensor" - you might be installing the wrong item. (Even then I only assumed residential because there was a tub mentioned...)
