There's this alarm[1],which costs half the price , offers talking warning, photoelectric detection and in home wireless alarms through the house(if there's a fi

There's this alarm[1],which costs half the price , offers talking warning, photoelectric detection and in home wireless alarms through the house(if there's a fire in the basement , you can know at the bedroom. It would be pretty cheap for the company to offer small gateway that connects the alarm to the net. The major difference between this and the nest is design, but does it justify doubling the price, especially when you need one for each room ? [1]http://www.amazon.com/First-Alert-SCO501CN-3ST-SCO500-Combination/dp/B000EVO7C2/ref=sr_1_2?ie=UTF8&qid=1381242086&sr=8-2&keywords=smoke+detector+wireless+talking http://www.amazon.com/First-Alert-SCO501CN-3ST-SCO500-Combin...