The DuPont Self-Charging Smoke Alarm is an innovation introduced by DuPont to save the hassle of changing batteries. The DuPont Self-Charging Smoke Alarm is charged by the home's electricity, screwing directly into ceiling-mounted light sockets and track lights without lampshades. Weight 9.6 ounces.

• A convenient and smart way to insure your family and home's safety
• Rechargeable battery powers smoke detector for up to 30 days in case of a power outage
• Simply flip the light switch twice to trigger 85 dB alarm and to reset
• No batteries required; no messy hardwire installation
• Get dual duty out of your ceiling-mounted light socket with this screw-in smoke detector