Mini Carbon Monoxide Detectoris equipped with an LCD display for easy real-time reading of values (ppm) and audible and visual alarms. When the concentration exceeds a certain level, the alarm sound and red light will flash. You can quickly and clearly understand the PPM concentration and take appropriate measures to effectively protect your personal and property safety. Carbon Monoxide AlarmWhen the carbon monoxide concentration reaches 100ppm, the alarm will be activated immediately, the red LED will flash and the buzzer will be triggered at the same time.85dB high pitch can get your attention faster. (Note: short press once can manually turn off the alarm sound) Carbon Monoxide Alarm Widely Used Adopting high-precision electrochemical sensor, it can quickly detect carbon monoxide gas. Can be used in kitchen, bedroom, bathroom, garage, RV, camping and other places. It has passed EN50291 safety certification, reliable quality. Alarm self-testTo test whether the product is effective or not, you can short press the button once for self-test. If the screen does not show the value, it means that the battery power has been exhausted, remind you to replace the battery in time Mini Carbon Monoxide Detectoris equipped with an LCD display for easy real-time reading of values (ppm) and audible and visual alarms. When the concentration exceeds a certain level, the alarm sound and red light will flash. You can quickly and clearly understand the PPM concentration and take appropriate measures to effectively protect your personal and property safety.