Assertion: carbon monoxide detector | /r/HasProperty | available
Facets:
value: for added convenience
type: PURPOSE
Source sentences:
text: Carbon monoxide detectors are available, but you need to understand how they work and what their limitations are in order to decide whether or not you need a detector
text: For added convenience, combination smoke and carbon monoxide detectors are also available, such as the Gentex GN-503F Combo Smoke & CO Alarm.