Nest Labs, a hardware startup that was recently acquired by Google for $3.2 billion, just announced that it is recalling all of its smart smoke detectors. Since launching Nest Protect a little over six months ago, the company has sold more than 400,000 units.

Apparently the Consumer Product Safety Commission (CPSC) is concerned about a glitch that shuts down the device accidentally. The smart smoke alarm was designed so that users could dismiss the alarm by waving a hand in front of the device—a feature called Nest Wave—but the CPSC has since determined that the feature could also be inadvertently activated, posing a serious safety concern for consumers.

According to a note from Tony Fadell, CEO of Nest Labs, Nest Wave will be automatically disabled within 24 hours. If you own one of the company's smart smoke detectors, just make sure that your device is connected to a wireless network and properly linked to your account so your unit gets the software update.

While Nest fixes the feature—which it estimates will take about two to three months—it will halt sales. The company will reinstate Nest Wave only after rigorous testing and subsequent approval from safety agencies in the U.S., Canada, and the U.K. And if this announcement simply makes you give up on the product? Nest will offer a complete refund for your unit. Looks like well before we get to our Orwellian future, technology will have more than a few kinks to work out.

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