First Alert Battery Powered Carbon Monoxide Detector with Electrochemical CO Sensor and Tamper-Resistant Locking Pin

Keeping your home and family safe since 1958, First Alert is built on reliability, quality and trustworthiness. Continuing to create innovative products, you can count on First Alert to make your home a safer place. With an electrochemical sensor for carbon monoxide, the Smoke and Carbon Monoxide Alarm features comprehensive protection. Featuring an End of Life Signal, you will get audible notification when it's time to replace your alarm.

Product Information:

Electrochemical CO Sensor
• Most accurate technology available for detecting carbon monoxide as compared to other sensing technologies.
Tamper Resistant
• Featuring a tamper resistant locking pin, the First Alert CO250B prevents removal of the battery, making it perfect for apartments, hotels or dorms.
Two Silence Features
• Silences low battery chirp for up to eight hours or silence nuisance alarm for several minutes.
End of Life Signal
• The BRK CO5120BN has an audible "end of life" notice after 10 years when it's time to be replaced.

Specifications:

• Power Source: Battery
• Battery Requirements: 1 Lithium Battery
• Diameter: 4-1/4"
• Depth: 1-5/8"
• Voltage: 120V