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DuPont Self-Charging Smoke Alarm
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Buy.com offers the DuPont Self-Charging Smoke Alarm, model no. PS-131, for $5.99 with free shipping. That ties our May mention and is the lowest total price we could find by $6. This smoke alarm screws into a ceiling light socket and recharges while the socket is turned on. Features include a low-battery chirp for the built-in rechargeable battery, which can last 30 days on a single 2-hour charge.
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