Nighthawk Battery Operated CO Alarm   Kidde's Nighthawk Battery Operated Carbon Monoxide Alarms provide a loud warning signal against the dangers of elevated carbon monoxide levels - fast. Easy to install too, these small, sleek units work great on a wall or tabletop and come complete with peak level memory, a test/reset button and three AA batteries for continuous monitoring of CO levels - even during power outages. Alarms also have a seven-year product life, providing 40% longer protection than other CO alarms. Alarms are UL Listed with a lifelong warranty. Full Product Info Features and Specifications: Model Number: 9000233 UOM: EA Technical Data: Part #900-0233 Kidde Model #KN-COB-B-LS Power Source: 3 AA Batteries Sensor: Electrochemical Audio Alarm: 85dB at 10 ft. Temperature Range: 40°F to 100°F Humidity Range: 10%-95% relative humidity (RH) Size: 3" X 5" X 1.5" Weight: .44 lbs with battery Interconnect: No LED: Green, normal operation; Red, alarm condition Warranty: 7 year limited UL Listed Properties: Written information and instruction make this unit's operation easy for anyone to understand