The SCO1BN is a battery-operated smoke and CO combination alarm. Can be mounted on wall or ceiling. Meets both UL217 and UL2034. Includes 9-volt alkaline battery. Ionization smoke sensing technology provides warning in case of fire. CO alarm warns of elevated CO levels. Easy alarm identification through different horn sounds and lights.Test-silence button.Three indicator lights: Battery flashes green for power Alarm flashes red when CO alarm levels are detected Service flashes yellow if service or replacement is required.

• -Alarm Dimensions: 5 3/5" Dia. x 1 4/5"H
• - Operating Voltage: 9V DC
• - Temp Range: 40F (4C) to 100F (38C)
• - Humidity Range: 10% to 90% Relative Humidity
• - Audio Alarm: 85dB at 10 ft.
• - Test Button: Electronically simulates a carbon monoxide condition, causing the unit to alarm
• - Alarm Reset: Automatic when CO clears; Press Test/Silence button to reset manually
• - Indicator LEDs: DC Power: Flashes Green when unit is receiving power;
• - Horn chirps every 30 seconds when battery is low
• - Service Status: Flashes Yellow when unit needs service or replacement; horn chirps when light flashes
• - Smoke Alarm: Audio Alarm (3 beeps, pause, 3 beeps) and rapidly flashing Red Smoke LED
• - CO Alarm: Audio Alarm (4 beeps, pause, 4 beeps) and rapidly flashing Red CO LED
• - Listing: UL2034