However, this also meant that building the most basic system, with a single processor, required both chips and considerable wiring between them, driving up costs.

They gave off no heat, seemed not to require wiring, and were controlled by little cranks.

Other home network systems which do not require new wiring include:

CRT systems can require professional installation, wiring and calibration.

It requires minimal wiring, and can share the wiring among several seats, reducing weight.

In recent decades, wireless doorbell systems have become popular, which don't require wiring in the walls.

It is less costly, by up to 75 percent, according to the company's estimate, than the smoke-detector systems that require hard wiring.

Building the cars requires complex wiring and, to reduce weight, the use of costly titanium for some parts, in place of the steel now used.

It was anticpated that his jaw would require wiring, and that he will be lost to the team indefinitely.

Other systems require special wiring, new equipment and expensive service calls.