?Decibel Meter with Data Logging?LANDTEK Decibel Meter itself is capable of storing up to 3100 data points and can also be linked to computer via the equipped USB cable for real-time recording and aso data export ?A/C Weighted Measurement?The A weighted simulates the frequency characteristics of low-intensity human ear noise, which is suitable for the detection of ambient noise. The C weighted simulates the frequency properties of high-intensity noises of the human ear, which is suitable for the sound pressure analysis of machine motors and machines. More professional noise measurement with a perfect user experience ?High Accurate Measurement?This Sound Decibel Meter utilizes a condenser microphone to measure sound levels ranging from 30~130dB (A) / 35~130dB (C), with an accuracy of 1.5 dB, and covers frequencies from 31.5 Hz to 8,500 Hz ensuring for high precise and real-time noise readings across various environments ?3-Color Light Alarm Display?: The Decibel Meter Sound Level Reader equipped with colored screen display for easy reading. It includes a 3-color light alarm: Visual alerts for high (red), low (yellow), and normal (green) noise levels make on-the-spot evaluations quick and easy ?USB Charging and PC Data Export?The Sound Meter is rechargeable via USB cable, built in with 1000mAh lithium battery. Say goodbye to frequent battery changes! The noise decibel meter is also compatible with Windows 7, 10, and 11 for connecting, data exporting, analysis and the ability to print graphs and data ?Multifunctional?Simply pressing buttons,user can set the date/time (year-month-day-hour-minute-second), F/S settings, data hold/delete, automatic shutdown time,record, Hi/Low alarm, A/C selection. db meter also features a calibration knob on the back. Whether you're measuring sound levels in a factory, office, traffic, or at home, this sound meter noise decibel reader delivers reliable and accurate results