Did you know that more than 40 household dryers catch fire every single day in the U.S. alone? The LintAlert is designed to prevent this all-too-common household hazard from occurring in your home. This simple yet innovative alarm works by monitoring your dryer exhaust system for potential problems. As lint accumulates, the LintAlert alerts you to the efficiency of your dryer using clear LED indicators. If airflow is restricted, an alarm is triggered.