The FireAngel FA3313 is the ultimate solution to keep your family safe from the dangers of carbon monoxide. With replaceable batteries and an alarm, it is a reliable and handy device. This white CO alarm is compact at 12.5 cm depth and 11 cm width, and can be placed in any room where there is a risk of carbon monoxide. It's easy to install and maintain, giving you peace of mind. The FireAngel FA3313 is the perfect addition to your home security setup.