Carbon Monoxide Detector LCD Display Screen Battery Powered Carbon Monoxide Alarm Detector Monitor Low Power Consumption Sound Light Alarm Sensor LED Indicator Light for Home Kitchen Restaurant Hotel Office Features: 【Reliable Performance】: Our battery-operated carbon monoxide detector utilizes a high-quality electrochemical sensor and advanced electronic technology to ensure stable operation and a long lifespan. With precise craftsmanship, it provides accurate and timely detection of carbon monoxide gas levels, giving you peace of mind. 【Versatile Installation】: Designed for convenience, our CO gas monitor can be easily placed on a desktop, ceiling, or wall using various mounting options. Its user-friendly design makes installation a breeze, allowing you to quickly set up and protect your home or workplace from the dangers of carbon monoxide. 【Effective Warning System】: Equipped with both sound and light alarms, our CO alarm detector monitor delivers a prompt alert when the carbon monoxide concentration reaches the preset level. This ensures that you promptly take necessary actions to prevent potential disasters such as fires, explosions, suffocation, or even loss of life. The LED indicator lights and LCD display provide clear information at a glance, ensuring easy monitoring. 【Long-lasting Battery Life】: Our carbon monoxide sensor is powered by batteries, ensuring continuous protection even during power outages. With low standby current and efficient power management, the battery voltage remains above 3.6V for extended periods, providing reliable performance for years to come. Say goodbye to frequent battery replacements. 【Advanced Features】: Our CO alarm detector monitor offers advanced features to meet your specific needs. It detects carbon monoxide gas concentrations at 50ppm, 100ppm, and 300ppm, triggering alarms within specific time frames to ensure immediate response. The natural diffusion sampling method and high-volume alert of ≥85dB (at 1m) guarantee rapid and effective warning. With its electrochemical sensor and maximum lifespan of 7 years, this CO gas monitor is built to deliver long-term protection. Specifications: Color: White Quantity: 1 Pack, 2 Pack, 3 Pack (optional) Shell Material: Plastic Supply Voltage: DC4.5V (3x AA Battery not included)  Battery Low Voltage: <3.6V Standby Current: <10uA Alarm Current: <70mA Gas Detected: Carbon Monoxide (CO) Alarm Concentration: 50ppm，Alarm within 60~90min  100ppm，Alarm within 10~40min  300ppm，Alarm within 0~3min Operating Environment: Humidity：0℃~40℃； Relative humidity：<95%No  condensing； Atmospheric Pressure: 86kPa~106kPa; Indoor use type Sampling Method: Natural diffusion Alarm Method: Sound、Lighting Alarm Alarm Volume: ≥85dB (1m) Sensors: Electrochemical sensor Max Lifetime: 7years Product Size: 10.6 * 3.8cm/4.2 * 1.5inch Warning:  Exceeding the allowed temperature and humidity range may result in a decrease or loss of detection function. Falling, collision, possible or complete loss of detection function. Note: Due to the different display screen and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Packing List: 2 x Alarm 2 x Instruction Manual 2 x Screw Pack