[MORE ACCURATE CO MONOXIDE DETECTOR]: The accuracy is up to 10 ppm, effectively ensuring the safety of your family and children. [SAFE CO DETECTOR]: With the latest photoelectric sensor, it can detect 360° in all directions. [LONGER-LASTING CO ALARM]: Up to 1600mAh 10-year lithium battery, much more than 30% of the general 10-year lithium battery. [MORE USE-FRIENDLY DETECTOR DESIGN]: No flashing LED, will not disturb the sleep of family members and children.