First Alert 0827B Ionization Smoke Alarm with 10-Year Sealed Tamper-Proof Battery 1654.7 out of 5 Stars. 165 reviews Shipping, arrivesin 3+ days First Alert Photo/Ion Smoke Alarm, 2 Aa Batteries $24.99 current price $24.99 First Alert Photo/Ion Smoke Alarm, 2 Aa Batteries...