[ Decibel Meter with Accurate Measurement ] The sound level meter measures range from 35 – 135 dB with an accuracy of ±2.0 dB, Frequency from 31.5 to 8KHz. Real-time monitoring can give you accurate data about the sound level of the area. [ Fast/Slow Mode & Max,Min,Hold Function ] "FAST" mode response in 125 Milliseconds; "SLOW" mode response in 1 second. With a data logger can record the current maximum decibel value; the decibel reader and recorder can freeze the reading on the display without worrying that the reading is too fast to record. [ Multi-function ] Our Digital Sound Level Meter with temperature measurement functions, can meet most of the needs of consumers. Widely applicable to individuals, families, enterprises, learning, industry, etc. [ 4 digital color LCD screen ] It features a uniquely-designed 4 digital color LCD screen so you can check your readings anytime.You can also easily check if it's running out of juice with the low battery indication or simply enjoy the auto power off function that will be enabled automatically when not in used after 15 minutes. [ A-Weighted Measurement ] The A-weighted SPL meter simulates the frequency characteristics of low-intensity human ear noise, which is suitable for the detection of ambient noise. It is the ideal tool to discover if something at your workplace or in your neighborhood is too loud, potentially causing hearing damage. [ Versatile Applications ] The decibel meter can be used in many environments and is also suitable for noise engineering, product quality control, health prevention, treatment, etc. Perfect for monitoring noise levels in communities, home theaters, audio systems, automobiles, workshops, schools, offices, factories [ Decibel Meter with Accurate Measurement ] The sound level meter measures range from 35 – 135 dB with an accuracy of ±2.0 dB, Frequency from 31.5 to 8KHz. Real-time monitoring can give you accurate data about the sound level of the area.