A special controller for the BSR X-10 adapts an environmental control system intended for the general public to the needs of the severely handicapped.

aTrademark of BSR (USA) Limited signals over the existing house wiring. The user pushes the desired key on a Command Console (Fig . 1) which is plugged into any ordinary domestic electrical outlet . The resulting coded signal is recognized by a selected module (Fig . 1) plugged into another ordinary outlet . (That other outlet may be in the next room, or it may be remotely located in the same house or in a neighbor's house or apartment served by the same utility company transformer . Thus a module can be used to signal to or summon help from a neighbor .) Each light or appliance to be controlled is plugged into one of the modules . Three types are available : a lamp module for incandescent lamps up to 300 watts; an appliance module for appliances using up to 15 amperes (also lamps up to 500 watts) ; and a wallswitch module for overhead and outside incandescent lights up to 500 watts. Each module has two dialtype switches : a "House Code" switch used to prevent