WS300 is a compact multifunctional environmental detector that integrates carbon dioxide, temperature, humidity, atmospheric pressure, and light level measurements into a professional device. Specially designed for long-term stability and reliability, it is an ideal choice for intelligent building management, HVAC control, indoor air quality monitoring, laboratory, warehouse, and agricultural applications. Carbon dioxide monitoring: High precision carbon dioxide sensors can monitor indoor air quality in real time, helping to optimize ventilation systems, improve comfort and safety. Light intensity detection: Light sensors measure environmental illumination for lighting control, energy-saving strategies, and environmental comfort optimization. Temperature and humidity: Integrated temperature and relative humidity sensors provide accurate environmental data for climate control, storage, and process management. Air pressure: The built-in air pressure sensor can track changes in air pressure, making it suitable for environmental research, altitude related control. Compact structure: A space saving shell suitable for wall mounted installation, panel installation, or equipment integration in control cabinets and monitoring terminals. Sturdy casing: A durable casing designed for continuous operation in indoor industrial and commercial environments. Color: As Shown Material: Metal Package Contents: 1 * CO2 sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.