Under $50
zealme 5-in-1 CO Detector Plug-in Smoke Alarm Gas Leak
A plug-in 5-in-1 detector that combines CO, smoke, and gas monitoring into one compact unit for essential home safety.
$50 - $100
zealme 4-in-1 CO & Gas Detector (2-Pack)
A 4-in-1 gas and CO detector that skips listing any features—reliability is a complete unknown.
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