General description Our 4-in-1 carbon dioxide detector is designed to monitor air quality by detecting carbon dioxide, temperature, humidity, and TVOC levels. It features multiple detection indicators, making it suitable for various applications, from home use to outdoor activities. Technical specifications Display: Clear color TFT screen Battery: 2500 mAh Charging time: 2-3 hours Operating time: 4-6 hours Usage Monitor carbon dioxide levels to protect your health Receive alarms for harmful levels to take immediate action Ideal for camping, tent parties, RV travel, truck driving, cave exploration, and sleeping in the car