【Reliable and Versatile】: Our carbon monoxide and smoke detector features a unique design that is both portable and easy to install. With its precision electro-optical sensor, it ensures high consistency and stability, making it suitable for use in various locations. 【Enhanced Safety Features】: Equipped with a loud and clear sound, our detector effectively alerts you when dangerous levels of carbon monoxide are detected. The red LED light flashes, accompanied by a powerful alarm, guaranteeing the safety of your loved ones. In emergency situations, the LED light blinks while emitting an 85-decibel alarm, ensuring visibility and providing ultimate protection against carbon monoxide intrusion. 【User-Friendly LCD Display】: The three-digit LCD display on our device provides vital information for quick troubleshooting. An "Err" message indicates a device malfunction, while the "Lb" indicates low battery power requiring replacement. If the LCD shows "999ppm," it means the carbon monoxide