Kidde Fire Sentry DC Smoke Alarm w Plate, 4 inch (Ionization) Manufacturer: Kidde Be the first to review this product No Wiring Required Unit uses ionization technology for excellent fast-flaming fire detectionAudio Alarm: 85 dB at 10 ft.UL listed SKU: 150914 Weight: Length: Width: Height: Availability: Our Price: $9.95 Availability: Usually ships within 1 to 2 business days Qty: Add to cart Add to wishlist Email a friend Ask question about this product DetailsCustomer Reviews Alarm operates on one 9V battery- included (no wiring required) for continuous protection—even during a power outage. 3-Year warranty. Technical Data: - Sensor: Ionization - Size: 4" x 1 7/16" - Weight: 8 oz. - Warranty: 3-year limited Be the first to review this product Customers who bought this item also bought Face Mask with Dual Exhale Vents- Grey Our Price: $8.95 Black Cotton Face Mask with Breathable Vent and... Our Price: $7.95 3 Ply Disposable Face Masks - 50 per Poly Bag Our Price: $24.95 Kidde Smoke Alarm with Battery Backup Our Price: $29.95 < > Product tags Smoke Detectors (26) , Kidde (10) , Smoke Alarms (20)