The utility model discloses a bracing wire switch which can display on-off state.

本实用新型公开了一种能够显示通断状态的拉线开关。

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Wall Street worries that ever more copper-wire customers will quit and switch to cellular, with its expensive transmission towers and subsidized handsets.

FORBES: Whitacre's Way

The technology for this has been available for many years and costs only around 30% more than the copper-wire method, but the market gave manufacturers little incentive to switch.

ECONOMIST: How a boring gadget saved $2 billion-worth of electricity

Embracing AirPlay has usually involved a wholesale switch in hardware: years of speaker investment go out the window for the sake of skipping a wire.

ENGADGET: Onkyo DS-A5 grafts AirPlay on to existing home stereos, docks older iOS gear