First Alert CO250B Carbon Monoxide Detectors, White Roof & Tar Brushes Max length of chimney 20

Max length of chimney 20

Anti-wear hydraulic oil formulated with high quality paraffinic base oils and an additive package that provides protection against rust and oxidation

Includes nut and sleeve

5 level humidity comfort level indicator

Fits (Catalog ID: 40165392)

First Alert CO250B Carbon Monoxide Detectors, White Roof & Tar Brushes Max length of chimney 20Highlights: Battery Powered Electrochemical Sensor Color : White Single station carbon monoxide alarm specifically designed for residential and institutional applications including sleeping rooms of hospitals, hotels, motels, dormitories, and other multifamily dwellings Provides early warning of the presence of carbon monoxide It features an electrochemical carbon monoxide sensor, an 85dB horn, a 9 volt battery power supply, a full function test