MultiFunctional Environmental Testing Device with Lithium Battery This advanced handheld tester combines multiple environmental measurement tools in one compact and convenient device. Designed for professionals and enthusiasts who require accurate, realtime data in diverse conditions, it helps you monitor and assess environmental factors with precision and ease. Key Features and Benefits: AllinOne Environmental Monitoring Combines an illuminometer, noise meter, temperature and humidity meter, and barometer in one device. Measures temperature, humidity, altitude, air pressure, light intensity, and noise levels (decibel A and C weighting) in real time. Offers maximum value tracking, data hold function, and easy unit switching for flexible operation. Accuracy and Fast Response Equipped with sensitive photosensitive elements for quick and precise light measurements. Integrated barometric sensor delivers realtime atmospheric pressure changes. Reliable data output for both shortterm checks and longterm monitoring needs. Clear and EnergyEfficient Display Large backlit color screen ensures clear visibility of all parameters, even in lowlight conditions. Auto poweroff after 15 minutes of inactivity to save battery life. LongLasting, Rechargeable Power Builtin 400mAh lithium battery for extended operation. Convenient TypeC charging interface for quick and universal charging. Low power consumption design maximizes battery life while maintaining performance. Comfortable, Durable, and Portable Design Soft rubber buttons provide a comfortable feel and longterm durability. Includes silicone protective sheath for added grip and protection. Lightweight handheld form allows for easy transport and use in the field. Practical Applications: 1. Facility and Workplace Monitoring – Check noise levels, lighting, and air conditions to maintain compliance and ensure a safe environment. 2. Outdoor Field Work – Monitor weatherrelated parameters such as temperature, humidity, and pressure during research or expeditions. 3. Indoor Environmental Testing – Measure light intensity, air quality factors, and comfort levels in homes, offices, or laboratories. Specifications: Measurement Functions: Temperature, humidity, light intensity, altitude, air pressure, noise levels (A and C weighting) Display: Backlit color screen Battery: Builtin 400mAh rechargeable lithium battery Charging Port: TypeC interface Additional Features: Data hold, unit switching, maximum value measurement, auto poweroff Design: Soft rubber buttons, silicone protective sheath, compact handheld body This device delivers precise, reliable, and versatile environmental measurements in one portable instrument, making it a practical choice for both professional and use.