[Built-in Rechargeable Lithium Battery]: Built-in 1600mA lithium battery with Type-C convenient charging interface, realizing the organic combination of low power consumption and stable performance, ensuring that the device has a long-lasting endurance, reducing the cost of use. It is an efficient, practical, and accurate multi-environment testing equipment. [Multi-functional Integration]: This multifunctional tester integrates various environmental testing functions, such as a noise meter, temperature tester, and humidity test meter, providing users with comprehensive, accurate, and convenient environmental detection services. [Accurate Sensing & Real Time Displaying]: With a digital display, real-time clear display of the parameters of the value of the environment. Temperature, humidity, and noise are displayed on the same screen, making it easier to read at a glance. [Humanized Design & Comfortable Experience]: This product features four control buttons that provide comfortable control and long-lasting durability, making it easy to use. The handheld body design makes it compact and , easy to carry, and suitable for on-site testing. [Wide Applications]: The device is designed to operate function steadily and precisely in various environments, making it an essential safety detection tool in scientific research, industrial production, and daily use., Manufacturer: Akfldms