Earlier this year, 440,000 Nest Protect smoke and carbon monoxide detectors were recalled following the discovery of a critical safety flaw that could accidentally deactive the system. Today, Nest has put the Protect back on sale at a reduced price of $99—previously $129. However, the “wave” feature that allowed the user to disable the alarm with a hand gesture has been removed.

In the blog post announcing the return of the Protect, the company boasted some of its safety statistics and recounted the story of one Nest Protect user who was alerted to the presence of carbon monoxide in his home by the device, which saved his life. Nest’s Doug Sweeny writes:

We’re very pleased that Nest Protect is once again available to customers. And now, the price is $99 to make it accessible to as many people as possible. Because we want to see more CO emergencies end up the way Lucas Wollermann’s did.

However, without the wave feature, users must how rely on a hardware button to turn off the alarm. While that may not seem like a very big deal, the company is investigating new ways to approach this setting. A Nest spokesman told Engadget:

…the company is working on an easier way to silence the alarm, even if hand gestures aren’t the way to go (people might silence the device when they didn’t mean to).

You can once again buy the Nest Protect from the company’s website, now for only $99.