A UWB transmission apparatus that, in a system using a mixture of amplitude and phase modulation schemes, can support both of the amplitude and phase modulation schemes, while preventing the signal powers of amplitude-modulated signals from degrading. The load lifting and supporting device includes a housing with opposite ends, a longitudinal axis extending between the ends, a threaded bore extending therethrough along the longitudinal axis, and an outer surface. The method also includes transmitting to the first computer first information regarding a change in status of at least one building control system device, and then transmitting to the first computer second information regarding a subsequent change in status of at least one building control system device. The only real assumption made about a page element is that it is part of the HTML display page and accessible via the Document Object Model. Related apparatus, methods, and systems are also described. The cryptographic structure can be built only by whoever emits the card or an agent thereof.