ABS housing and rechargeable battery, the device ±0.5℃ temperature accuracy and mobile connection for trackings historical air Its small size noise meter functionality help users implement effective soundproofing strategies while maintaining continuous air supervisions through data logging Whether it ' s, factory workshop, school, or hospital, it can provide you with noise data, create a peaceful and comfortable environment, and protect your living and working space It is small and easy to carry You can place it you like without taking up space This product is a decibel noise meter It use accurate sensors and precise measurement technology to display noise, temperature, and humidity on its LED screen, allowing you to clearly understand the noise levels and take effective noise reductions measure