TA8151 Sound Level Meter is an instrument designed to measure ambient sound levels. It's equipped with condenser microphone, which combines precision with stability and reliability, widely used in environmental noise testing, quality control, safety management in factory, school, community, office, construction site, etc.. Features: Able to measure sound level from 30dB to 130dB, with auto-range function, it makes your measurement fast and accurate. Equipped with condenser microphone, which can pick up sounds with great detail and accuracy, making it a reliable and stable instrument. With backlit LCD screen, it offers great convenience when working at night or any dark places. Able to take maximum and minimum value measurement, and provides FAST and SLOW two speeds of measurement. Practical functions including data hold, low power indication, and auto power off. With protective rubber case to protect the instrument, making it durable and impact-resistant. Widely used in factory, school, community, office, construction site, etc. for environmental noise testing, quality control, safety management and more. Specifications: Material: ABS Brand: TASI Model: TA8151 Measurement Range: 30~130dB Resolution: 0.1dB Accuracy: ±1.5dB(94dB@1kHz) Frequency Range: 31.5Hz ~ 8.5kHz Display: 3½ digit display(MAX.1999) Response Time: (Fast)0.5s;(Slow)1s Microphone: 1/2inch electret condenser microphone Power Supply: 2 * 1.5V AAA battery (Not Included) Operating Condition: 0~40; 10%~80%RH Storage Condition: -10~60; 10%~70%RH Item Size: 205 * 55 * 30mm / 8.07 * 2.16 * 1.18in Item Weight: 100g / 3.52oz Package Weight: 240g / 8.46oz Package Size: 24.7 * 9.2 * 5.2cm / 9.72 * 3.62 * 2.04in Packing List: 1 * Sound Level Meter 1 * Foam Ball 1 * Storage Bag 1 * User Manual (English)