Instructions for proper installation, handling, and disposal of smoke detectors are found on the package. Smoke detectors have a limited life span, usually around 10 years. Smoke detector companies will accept returned detectors for proper disposal. Check for an address on the back of the detector case, on the box it came in, or in the instruction booklet.
Smoke Detector Companies
Two companies that make a vast majority of smoke detectors and sell them under many different brand names. If no contact information is found on your detector, contact one of these companies to find out if they will accept used detectors for recycling or disposal.