About this product: 【3-in-1 Multifunctional Carbon Monoxide Checker】The new 2025 Monons carbon monoxide checker is an advanced model that, while following past designs, can simultaneously and accurately detect carbon monoxide concentration, temperature, and humidity with a single device. 【Matte finish for a high-class feel, stylish whether hung or placed! Perfect as a gift!】 "Green" is perfect for camping gear, an outdoor color that blends in with nature. With its unique shape and exquisite color, it stands out even at campsites. Combining practicality and design, it's a perfect item to reward yourself for your hard work or as a gift for someone special, allowing you to enjoy the beauty of nature more safely. *This product is not a carbon monoxide alarm for indoor use. 【High-precision, instant detection to protect lives! Perfect for Japanese outdoor activities】 Equipped with a high-precision sensor that can detect from 0PPM, it can stably measure even in the rainy and humid outdoor environment of Japan. The 3D multi-surface air intake amplifies the airflow, accurately capturing even the slightest changes in carbon monoxide concentration and displaying them on the display in just 0.5 seconds. With a design that combines accuracy and speed, it protects you and your loved ones from the dangers of carbon monoxide, which you can't see, hear, or smell. It is an essential safety item for camping, car camping, and as a precaution in case of disasters. 【Backlight color changes! Check the danger level at a glance】 Not only numbers, but also the backlight color: Green (50-100PPM) → Yellow (101-200PPM) → Red (201PPM or more) changes to instantly determine safety, caution, and danger. It's a safe design that allows you to intuitively grasp the situation even in a dark tent or car. 【Large screen, large characters! Safe confirmation】 Newly designed for 2025! The large screen and large characters make it even easier to understand changes in carbon monoxide concentration. 【85dB loud alarm + Japanese voice! Immediately notify of danger】 When the CO concentration or the time of occurrence exceeds a certain standard, a buzzer and voice announcement will prompt ventilation, preventing the risk of poisoning. Safe even while sleeping! The loud alarm notifies you of the danger of carbon monoxide without fail!