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The US-only Nightingale sleep system costs $300.

$69.99 at eBay
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Caption:Photo:Chris Monroe/CNET
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It works with Amazon Alexa devices and IFTTT.

$69.99 at eBay
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Published:Caption:Photo:Chris Monroe/CNET
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You actually get two units for your money.

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Plug in these pass-through outlets on opposite sides of the bedroom.

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Then use the Nightingale iOS app to set an ambient noise schedule.

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It also comes with a color-changing nightlight; you can turn it off if it bugs you.

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The units can play sounds for many different types of rooms.

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It can also be customized for people who snore or have tinnitus.

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