- Absolute Carbon Monoxide Detection: The CF-9R CO detector is essential for camping or using a caravan where carbon monoxide (CO) can accumulate. This colorless, odorless gas is a serious health risk, and the CF-9R monitors CO levels to safeguard your well-being. - 6-in-1 Portable Design: The CF-5R detector is compact (2.8 x 1.3 inches) and versatile, measuring CO, O2, air pressure, altitude, temperature, and humidity in real time. It includes a 7.8-inch lanyard for easy hanging or standing, making it ideal for travel. - Advanced Electrochemical Technology: Enjoy precise and instantaneous detection of carbon monoxide and oxygen. The 1.45-inch HD color screen displays all relevant air quality data, ensuring you are always aware of your surroundings. - Energy-Efficient Operation: The display dims after 20 seconds of inactivity, allowing for undisturbed sleep while conserving battery life. Simply press any button to reactivate the screen. - Reliable Audio and Visual Alerts: If CO levels exceed 50, the detector's CO symbol flashes, and an alarm sounds, alerting you to potential danger. You can easily silence the alarm by pressing the power button. - User-Friendly Functionality: The CF-9R requires no complex setup—just turn it on and start using it. Instructions: 1) Long press the power button to power on/off; 2) Short press the "M" button to switch between °F and °C; 3) Press "M" twice to toggle height display between meters and feet. Use Scenarios: - Ideal for camping trips, ensuring safety from carbon monoxide in enclosed spaces. - Perfect for checking air quality in motorhomes or caravans, providing peace of mind on the road. - Suitable for indoor use in bedrooms or living areas, helping to monitor air quality while you sleep.