Ideal for family concerned about home noise pollution, professional like engineers and architects, as well as students conducting sound analysis Its lightweight design makes it easy to carry and use, while its replaceable battery ensures high without frequent changes Perfect for use in setting such as homes, offices, schools, hospitals, and mall to assess and maintain proper noise levels noise measurement with the ZL81A Digital Decibel Meter, featuring a high accuracy sensors that ensures data for effective sound Equipped with a digital display, this handheld device actual time noise levels readings and supports a wide decibel ranges to suit various environment, Manufacturer: Xjdzineq