Item Type: Sound Level Meter Model: HT64 Material: ABS Battery: 2 x 1.5V AAA(not included) Application: Indoor noise measurement; outdoor noise measurement; electrical noise measurement; interior noise measurement; library noise measurement; construction site noise measurement Basic Parameters: Detection Range: 30~130dB Frequency Range: 30Hz~8kHz 1VARIOUS MEASUREMENTS: Suitable for indoor noise measurement; outdoor noise measurement; electrical noise measurement; interior noise measurement; library noise measurement; construction site noise measurement 2TEST QUICKLY AND ACCURATELY: High accuracy condenser microphone can measure the quality of sound in various environments without contact, and display test results quickly and accurately 3CONVENIENT MEASUREMENT IN DARK: The screen has a backlit display, which is convenient for measurement in dark environments 4ACCURATE DETECTION: Detection range from 30~130dB, frequency range is 30Hz~8kHz, possess excellent performance and long service life 5SCRATCH RESISTANT ABS: Made of good quality ABS material, possess impact resistance, scratch resistance, and environmentally friendly 1 x Sound Level Meter 1 x User Manual