All states have laws (statutes) that require landlords to install and maintain smoke detectors in leased residential premises (apartments, homes).

Some states such as Iowa, Maine, Massachusetts, Ohio, and Vermont require photoelectric or ionization sensors—at least in new construction. And Oregon requires smoke detectors with a HUSH mechanism that allows the alarm to be silenced or temporarily desensitized for 7 minutes while a known condition such as cooking is causing the alarm to activate.

Most states also require landlords to install and maintain carbon monoxide detectors in leased residential premises. Smoke and carbon monoxide detectors are widely available in the same device.

In Oregon, landlords are required by law to install and maintain smoke detectors in all leased residential premises. These smoke detectors must be equipped with a 'HUSH' feature, which allows the alarm to be temporarily silenced for a period of up to 7 minutes in the event of a non-emergency situation, such as when cooking smoke activates the alarm. This requirement is designed to reduce the likelihood of tenants disabling the smoke detector entirely due to nuisance alarms. Additionally, Oregon law mandates the installation and maintenance of carbon monoxide detectors in residential rental properties. These requirements are in place to ensure the safety of tenants by providing early warnings in the event of smoke or carbon monoxide presence in the dwelling. It is common for smoke and carbon monoxide detectors to be combined into a single device, which can be used to satisfy both requirements.