Marine Carbon Monoxide Detector with Customizable Alarms, LED Indicator Light and 100dB

Marine Carbon Monoxide Detector with Customizable Alarms, LED Indicator Light and 100dB Loud Alarm, Including a 12V 3A Normally Closed Relay, Provide You with Additional Security Protections MULTIPLE ALARM INDICATORS: Carbon monoxide (CO), being colorless and odorless, is often difficult to detect when leaked, yet it poses significant harm to the human body. Our alarm system is designed to promptly detect and provide multiple indicators, including a red LED indicator light, LCD screen displaying alarm symbols, and an alarm sound exceeding 100dB. This effectively alerts you to the danger of elevated carbon monoxide levels through both visual and auditory signals CUSTOMIZABLE ALARM THRESHOLD: You can set the alarm threshold using the SET key (range 10--500PPM). The default value is 400PPM, and the alarm mechanism is triggered when the detected CO value is continuously >= 400ppm for 30 seconds. This adjustability allows the alarm to adapt to different environments and provide more pe