Brennenstuhl 1290490 co detector bcn 1221 brennenstuhl 1290490 p align left this co detector bcn 1221 from brennenstuhl has been designed to help protect against poisonous carbon monoxide co in garages living quarters with open fire places or when camping equipped with a durable modern electro chemical sensor and alarm signal with led display p brennenstuhl 1290490 co detector bcn 1221