The US2W12 is a preconfigured version of the US2-40.
The SimplyBrilliant UPB Universal Dimming Transceiver Base, model US2-40, provides direct load control and/or remote control of permanently-installed new or existing lighting fixtures, lamps and other electrical devices connected to UPB devices. Incandescent lamps can be turned ON or OFF, and can also be dimmed and brightened. The US2-40 can be configured to turn other types of non-dimmable loads ON and OFF. Actuator faceplates, model series ZS1X and ZS2X, available in rocker and/or pushbutton styles, are fully interchangeable on the US2-40 base. The US2-40 can be configured to control a load and provide scene control, or scene control only (no load).
The US2-40 can control a load of up to 900W (see table 1). Load control can be configured to any rocker or button on the various actuator faceplates. All switch actuators may act as transmitters that can communicate with other UPB devices, either individually or collectively for lighting scenes.
Note: This incandescent dimmer cannot be used to dim fluorescent, electronic low-voltage or metal halide lighting, unless specifically allowed by the lighting manufacturer. Please see instructions to configure this product for ON/OFF operation with these types of lighting.
Note: With the SimplySmart pre-configured devices, each device has been hard coded with a unique ID, which means you'll only want one of each of the following in a single home:
DKIT-02,
DKIT-02,
UML7,
UML8,
US1W9,
US1W10,
US2TP11, or
US2W12. Having more than one of these in the home will make communication unstable, as these are designed to be starter devices only.