1. VARIOUS MEASUREMENTS: Suitable for indoor noise measurement; outdoor noise measurement; electrical noise measurement; interior noise measurement; library noise measurement; construction site noise measurement2. TEST QUICKLY AND ACCURATELY: High accuracy condenser microphone can measure the quality of sound in various environments without contact, and display test results quickly and accurately3. CONVENIENT MEASUREMENT IN DARK: The screen has a backlit display, which is convenient for measurement in dark environments4. ACCURATE DETECTION: Detection range from 30~130dB, frequency range is 30Hz~8kHz, possess performance and long service life5. SCRATCH RESISTANT ABS: Made of good quality ABS material, possess impact resistance, scratch resistance, and environmentally friendlyItem Type: Sound Level MeterModel: HT64Battery: 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 measurementBasic Parameters:Detection Range: 30~130dBFrequency Range: 30Hz~8kHzColour:blackMaterial:ABSSize:180 x 32mmPackage Contents:1X Sound Level Meter1X Chinese and English manualOnly 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.