Features Backlit LCD Screen: The clear backlit display ensures easy readability in dark or low-light conditions, making it convenient for various environments High Accuracy Microphone: This device is equipped with a 1/2 inch capacitive microphone, providing exceptional sensitivity and rapid response for precise noise measurements Visual and BLE Alarm: Alerts are visually indicated with a red background and flashing measurement values when noise levels exceed or drop below preset thresholds Auto Power Off Feature: The sound meter conserves battery life by automatically shutting off after 5 minutes of inactivity, ensuring longer usage without frequent battery changes Versatile Applications: Ideal for environmental monitoring in residential areas, construction sites, factories, restaurants, and entertainment venues, making it suitable for multiple settings Features: 1、2 Testing Modes: Comes with 2 measurement modes, the coating thickn gauge with digital display supports 0？1500μm wide range for your different needs. 2、Smart Detection: Trough electromagnetic induction and vortex induction, the thickn of the coating can be measured with high safety, very reliable. 3、Higher Accuracy: For a single measurement, only the measurement data is updated once, and for continuous measurements, the data is continuously updated. 4、Wide in Utility: Allows for wide application application for coating thickn of rubber, ceramics, enamel, paint, metal, car paint, and so on. 5、Simple Carrying: Light in weight and compact in size as well, the digital coating thickn gauge is very convenient to carry for outdoor working. Specification: Item Type: Coating Thickn Gauge Material: ABS Power Supply: 3.7V lithium battery, 400mA, included. Display: LCD Screen Test Range: 0-1500μm Package List: 1 x Thickness Gauge 1 x User Manual 1 x USB Cable 2 x Metal Calibration Piece 5 x Plastic Calibration Piece Package List 1 x Thickness Gauge 1 x User Manual 1 x USB Cable 2 x Metal Calibration Piece 5 x Plastic Calibration Piece