NIGHTHAWK DIGITAL CARBON MONOXIDE DETECTOR (513005)

Digital readout from 0-999 PPM
High-level memory display shows highest carbon monoxide reading since unit was last reset
Updated digital reading every 2-12 minutes
Powerful 85 decibel alarm
Testretest button
No costly replacement parts
Never needs recalibration
With 8 ft cord
Includes 9 volt battery
5-YEAR WARRANTY