The Smoke Detector Tester is a smokeless aerosol spray that provides a safe functional test for both residential and commercial smoke alarms. This tester offers testing convenience and a way to ensure that your smoke detector, including the sensing unit is in proper working condition. Consult the detector s owner’s manual for recommended test intervals. The components of this product are in compliance with the chemical requirements of CEPA. See Material Safety Data Sheet (MSDS) for instructions on hazards identification, first aid measures and fire fighting measures, as well as toxicological and regulatory information. Do not use this product without first consulting the MSDS.