Battery operated ionization smoke alarm with test button, 9 V battery included. Ionization smoke sensors are generally more sensitive at detecting small particles, which tend to be produced in greater amounts by flaming fires. Beeping signal warns when the battery needs replacing. Hinged cover for easy battery replacement. Meets ANSI/UL217 standard. 3 years limited warranty.

The FIRST ALERT combination smoke and carbon monoxide alarm with voice location detects both smoke and carbon monoxide. It is a wireless-enabled battery-operated detector that features an 85 dB siren plus a voice alarm to let you know where the danger is. This technology allows other compatible FIRST ALERT wireless enabled alarms located in several areas of your home to communicate with each other, alerting you to a problem early even when it's on another floor. The smoke and carbon monoxide detector features a photoelectric smoke sensor and electrochemical carbon monoxide sensor.

Battery operated, RV approved, ionization smoke alarm with lighted power and alarm indicator, 9 V battery included. With silence feature. Ionization smoke sensors are generally more sensitive at detecting small particles, which tend to be produced in greater amounts by flaming fires. Tamper-resistant locking pin. Hinged cover for easy battery replacement. Meets ANSI/UL217 standard.

Designed to help promote household safety, the FIRST ALERT 9120B hardwired smoke alarm with battery backup can provide a vital early warning of fire. This hardwired smoke detector uses an ionization smoke sensor to reliably detect smoke from hot, fast-flaming fires.

No batteries required. 120 volt plug-in. With silence feature, samples the air and performs self-diagnostic tests approximately every second. A microchip inside the unit stores each reading, and remembers the levels of CO it has been exposed to over time. Controls are: test/silence button, green power light, yellow service light, red alarm light. Loud 85-decibel alarm, UL listed. 5 year limited warranty. 3.3" height x 4.75" width x 2" depth, 0.24 pounds.

The FIRST ALERT CO400 carbon monoxide alarm utilizes a electrochemical carbon monoxide sensor that lasts for up to 5 years to detect carbon monoxide. This carbon monoxide detector is battery powered, making it portable and easy-to-use anywhere, even in the event of a power outage. When carbon monoxide levels become elevated, a loud 85 dB alarm alerts you to the threat.

Voice Alarm -Announces the hazard type detected thereby helping to speed up the correct reaction to the hazard detected. Alarm announces "Fire!" when a smoke or fire hazard is detected and announces "Warning Carbon Monoxide" when a CO hazard is detected.
Combined Carbon Monoxide and Smoke Alarm - A single unit can be installed where previously, two were needed. Reduces installation time and helps to keep home decor attractive.
Test/Reset Button - Tests alarm circuitry and triggers the voice announcement.