CHZHVAN Combination Carbon Monoxide Detector & Gas 4-in-1 Natural Gas&CO Alarm with Temperature&Humidity for Home Security Alarm

• 4-In-1 Plug In Gas & Carbon Monoxide Detectors: High-definition LCD large screen real-time monitoring, carbon monoxide, combustible gas, temperature and humidity measurement, environmental safety at your fingertips, supports screen brightness adjustment and °C/°F unit conversion to meet your personalized needs.

• Dual Audio-Visual Alarm: When the concentration of combustible gases or carbon monoxide reaches a preset threshold, the device will trigger the corresponding alarm. Different concentrations of combustible gases will cause different colored indicator lights to flash. When the concentration exceeds 3000 PPM, the red indicator light will flash and an 85-decibel alarm will sound; the carbon monoxide concentration is displayed in real time on the screen in PPM units.

• Plug-In Design: Simply portable gas & carbon monoxide detectors into a standard power outlet to start working. Compatible with 100V-240V AC power outlets.

• Application Scope: Gas & carbon monoxide detector is suitable for use in bedrooms, living rooms, cars, and other places where people are present, providing safety protection for families and travelers.

• Important Instructions: Please remove the protective film before use. After plugging in, please wait 180 seconds for the device to enter monitoring mode.