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If you’re at all concerned about your home’s air quality and the dangers of carbon monoxide, this is one Amazon deal you won’t want to miss.

The Kidde Nighthawk carbon monoxide detector is currently listed on Amazon for an astounding sale price of $17.97. While this seems like a massive drop from its list price of $71.50 (yay!), its average Amazon price actually rounds out at $27.21. Still, this deal means you’re saving close to $10 off even the average price. To boot, this is the lowest price we’ve seen in more than a year—cheaper even than at Walmart and The Home Depot.

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The Kidde Nighthawk plugs right into an outlet, features back-up battery operation in case of power failure, and boasts a digital LED display. It also comes with a limited 10-year warranty.

Carbon monoxide is an odorless, colorless gas, and it can kill you. Homes with fireplaces, wood-burning stoves, gas ranges and gas dryers are especially at risk of the high levels of carbon monoxide that can lead to poisoning. Every home should have at least one carbon monoxide detector.

Over 21.6K customers rate this Amazon #1 Best Seller at 4.7 out of 5 stars.

Get the Kidde Nighthawk Carbon Monoxide Detector at Amazon for $17.97

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Prices were accurate at the time this article was published but may change over time.

This article originally appeared on Reviewed: This CO detector could save your life—and it’s less than $20 on Amazon