This screen decibel meter can read the real-time levels of decibels, temperature and humidity. High Precision: This sound level meter uses an intelligent air semiconductor sensor to test decibel temperature and humidity values. Compared with ordinary sensors, it is more , accurate and stable. This noise monitor is a great tool for checking, monitoring or controlling and testing the sound level of any environment and can be applied to noise engineering, product quality control, health prevention and treatment, etc. This LED display decibel meter can be hung or placed on a table, making it an perfect noise meter for testing sound levels in classrooms, studios, major , factories, construction sites, homes, offices, etc. Colour:White Material:plastic type:C Package Contents: 1 x decibel meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.