![FIRST ALERT 3120B Smoke Alarm, 120 V, Ionization, Photoelectric Sensor, 85 dB, White [SKU: ORG5217252]](https://cdn11.bigcommerce.com/s-er447ou6zb/images/stencil/600x600/products/8487/8603/5217252__96471.1683054107.jpg?c=1 "FIRST ALERT 3120B Smoke Alarm, 120 V, Ionization, Photoelectric Sensor, 85 dB, White [SKU: ORG5217252]")
![FIRST ALERT 3120B Smoke Alarm, 120 V, Ionization, Photoelectric Sensor, 85 dB, White [SKU: ORG5217252]](https://cdn11.bigcommerce.com/s-er447ou6zb/images/stencil/1280x1280/products/8487/8603/5217252__96471.1683054107.jpg?c=1 "FIRST ALERT 3120B Smoke Alarm, 120 V, Ionization, Photoelectric Sensor, 85 dB, White [SKU: ORG5217252]")
Product Overview
The FIRST ALERT hardwire dual photoelectric and ionization sensor smoke alarm with battery backup is designed to provide peace of mind. The photoelectric and ionization sensors on this fire detector alert you to both smoldering and fast-flaming fires, offering comprehensive detection and early warning. The 85 dB fire alarm can connect to other compatible hardwired detectors for larger spaces. [QTY/UOM: 1EA / 1EA] [PMS SKU: F045-00710] [Category: FIRE/HOME PROTECTION/FIRE\/SMOKE ALARMS;Shop All]
![FIRST ALERT 9120B Smoke Alarm, 120 V, Ionization Sensor, 85 dB, White [SKU: ORG7730138]](https://cdn11.bigcommerce.com/s-er447ou6zb/images/stencil/500x659/products/8521/8637/7730138__94688.1683054125.jpg?c=1 "FIRST ALERT 9120B Smoke Alarm, 120 V, Ionization Sensor, 85 dB, White [SKU: ORG7730138]")
![FIRST ALERT 9120B6CP Smoke Alarm, 120 V, Ionization Sensor, 85 dB [SKU: ORG5831433]](https://cdn11.bigcommerce.com/s-er447ou6zb/images/stencil/500x659/products/8519/8635/5831433__02388.1683054124.jpg?c=1 "FIRST ALERT 9120B6CP Smoke Alarm, 120 V, Ionization Sensor, 85 dB [SKU: ORG5831433]")
![FIRST ALERT 7010B Smoke Alarm, 120 V, Photoelectric Sensor, 85 dB, White [SKU: ORG5217211]](https://cdn11.bigcommerce.com/s-er447ou6zb/images/stencil/500x659/products/8518/8634/5217211__44712.1683054123.jpg?c=1 "FIRST ALERT 7010B Smoke Alarm, 120 V, Photoelectric Sensor, 85 dB, White [SKU: ORG5217211]")
![FIRST ALERT 9120LBL Smoke Alarm, Ionization Sensor, 85 dB, White [SKU: ORG2531226]](https://cdn11.bigcommerce.com/s-er447ou6zb/images/stencil/500x659/products/8490/8606/2531226__44459.1683054108.jpg?c=1 "FIRST ALERT 9120LBL Smoke Alarm, Ionization Sensor, 85 dB, White [SKU: ORG2531226]")
![FIRST ALERT 0827B Smoke Alarm, 3 V, Ionization Sensor, 85 dB, White [SKU: ORG5217286]](https://cdn11.bigcommerce.com/s-er447ou6zb/images/stencil/500x659/products/8488/8604/5217286__05285.1683054107.jpg?c=1 "FIRST ALERT 0827B Smoke Alarm, 3 V, Ionization Sensor, 85 dB, White [SKU: ORG5217286]")