WattStopper DSW-302-W Dual Tech Wall Switch Occupancy Sensor, 120/277V, White

Two relays are built in, so the DSW-302 can switch two separate lighting loads or circuits from one wall box. That is what separates it from a single-relay wall switch sensor: you can run the overhead general lighting on one relay and a second circuit, say the row by the windows or a fan, on the other. If you only need one load switched, a single-relay wall switch sensor is the simpler order.

Yes. The DSW-302-W is a 120/277 VAC device, so it drops onto either a standard 120V branch circuit or a 277V commercial lighting circuit without a different part number. WattStopper also builds this sensor family in 347 VAC for Canadian installs, which is a different model, not this one.

It ships defaulted to Manual-ON. Occupants press the switch to turn lights on and the sensor turns them off when the room empties. That is the setting many energy codes require for offices and it is what gets the deepest savings, so if you are replacing an auto-on sensor and users complain the lights no longer come on when they walk in, that behavior is the factory default, not a fault.

The sensor body measures 4.8 x 2.0 x 2.99 inches and weighs 0.47 lb, so it takes a single gang opening with the 2.99 inch figure being the dimension that has to clear the back of the box. On a retrofit into an older shallow box packed with conductors, check depth before you pull the old switch.

Dual technology. The DSW-302 uses both sensing technologies together rather than passive infrared alone, which is why it is specified for spaces where a PIR-only switch drops the lights on someone sitting still, private offices, restrooms, and small conference rooms. In a space with a clear line of sight and lots of movement, a straight PIR wall switch sensor will do the job for less.

Order by manufacturer part number DSW-302-W. That is the white, 120/277V, two-relay dual technology wall switch sensor. The last character is the finish code, so a submittal calling for a different color is a different part number, and the 347V version is a separate model as well.

White, with a color-matched lens and a low profile so the sensor face reads as white rather than a dark PIR window sitting in a white plate. If your building is standardized on ivory or light almond devices, this one will not match, the -W suffix in the model number is the white version.