2-in-1 alarm with smoke and carbon monoxide detector with white color digital display

Batteries not included; three AA batteries are required. Low power consumption and long battery life guaranteed. This smoke detector uses a high-precision electrochemical sensor to warn you of the dangers of carbon monoxide (CO). A photoelectric sensor detects smoke, minimizing false alarms. Your safety is thus ensured. It is equipped with a highly reliable electrochemical CO sensor and an infrared photoelectric sensor. It is suitable for any location where smoke and CO are produced, such as kitchens, bedrooms, hotels, apartments, and shops. It can also be used for barbecues, charcoal stoves, garages, etc.