A module having a switch, a processor, a motion detector and a wireless transceiver.
The module controls the operation of an electrical load, such as a light, based
on the switch position, programming executing on the processor, an output from
the motion detector or an output signal from the transceiver. The module transmits
information corresponding to the electrical load, switch position, programming
and detected motion. In one embodiment, the module is battery powered. In various
embodiments, the module includes an intercom, a high intensity siren, and a photosensor
having an output as a function of an ambient light level. In one embodiment, the
module is compatible with a wireless communication protocol such as is used with BLUETOOTH.