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Avoid heat, direct sunlight, and excessive humidity, which can ruin your leaves
Install a suitable battery (20700/21700 recommended for maximum autonomy) in the box
Runner-up: First Alert SC5 Hardwire Smart Smoke and CO Alarm Runner-up This model is more streamlined than our top pick
Feb 16, 2026 Same tubes as the stores but a bit cheaper thank you will be buying again
Unlike non-smart models, they also send early low-battery warnings to an app, saving you from vexing middle-of-the-night chirps
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