Digital Sound Level Meter, ABS Decibel Meter with USB Data Storage, 30 to 130 dB 4-in-1, Humidity, Temperature, and Sound Monitor, for Classroom, Office, Home

4-in-1: This sound level meter combines noise measurement, temperature, humidity, and time display on a large screen. A convenient decibel meter for the classroom, office, library, and home. 【Accurate Noise Detection】 Built with a 6mm condenser microphone and A-weighting, this sound level meter measures 30 to 130 dB with an accuracy of ±1.5 dB and a fast response for everyday digital readings. USB Data Storage: Store recordings every 2 seconds for up to one year, then connect via USB to export the data to Excel. Useful for tracking noise trends in classrooms, workspaces, or study areas. Alarm and Display: A visual indicator and audible alarm alert you when noise levels become too high. Includes an alarm clock function, a 24-hour time display, and a 3-digit digital display for easy verification. fast.
【Practical Specifications】 Made of ABS with built-in 4000mAh lithium battery and DC 5V 1A Type-C power input. The operating range is 32 to 104°F with 10 to 80% relative humidity for indoor use.