4 in 1 Carbon Monoxide Detector, Gas Detector, LCD Display Alarm Gas

4 in 1 Carbon Monoxide Detector, Gas Detector, LCD Display Alarm Gas. Electrochemical Sensor: Adopts micro-processing control and electrochemical sensor for high stability and low power consumption. LCD Display Alarm: Equipped with LCD display for clear sound and light alarm indication with slow or fast flashing. Wide Voltage Range: Working voltage supports AC 90-240 volts for versatile power supply compatibility. One-Click Mute Function: Features one-click mute that only affects sound prompts while lights and displays remain active. Dual Temperature Mode: Switch between Fahrenheit and Celsius modes by holding the Test button for 5 seconds after preheating. High Alarm Volume: Alarm volume exceeds 85dB within 1 meter to ensure effective warning in indoor environments. Fast Response Time: Response time is within 3 minutes for gas concentrations of 3000ppm or higher. Comprehensive Certifications: Certified with CE, ISO, and RoHS standards for quality and safety assurance.