Tackle two threats at once with the Fireangel Smoke & CO Combination Alarm. This Fireangel combo alarm effectively protects from two unique threats at once. Featuring advanced optical sensing technology this device will reduce nuisance alarms whilst still providing a quick reaction to high levels of smoke and temperature. Furthermore, advanced electrochemical technology allows for better CO detection. This combo alarm has two different alarms and indicator lights which indicated the threat it has detected, whether it be dangerous levels of smoke or carbon monoxide. Features and benefits Two devices in oneThis device effectively tackles two hazards simultaneously. Long battery lifeFeaturing a 10 year battery life. a 30-day low battery warning alerts the owner of when the device needs replacing, Advanced Electrochemical Sensoraccurately detects low levels of CO. Advanced optical sensing technologyReduces nuisance alarms Specifications 3 year warranty Colour: White Prod