<p>Sensitive Sensor: 0.5s response time, non-contact. Can measure sound level under any circumstances, quickly display the accurate measurement result.</p> <p>【LCD Display】Large backlit LCD display, easy to read at night. Low radiation, reduces eye damage.</p> <p>Accurate Measurement: Measuring range 40~130dBA; accuracy ±3.5dB with 0.1dB resolution.</p> <p>【Multifunction】Data hold function, max/min sound level measurement; 15 minutes auto shut-off, also has alarm function when the sound level is up to 130dB.</p> <p>Power Supply: Powered by 9V battery (included)</p> <p>Quantity: 1pc</p> <p>Color: Yellow</p> <p>1. Frequency Range: 31.5 Hz ~ 4 kHz, Range: 40 ~ 130 dB</p> <p>2. Accuracy: ±3.5 dB (under 94 dB, 1 kHz reference condition), Resolution: 0.1 dB</p> <p>3. Frequency Weighting of the Sound Level</p> <p>4. Microphone: 1/2 inch polarized condenser microphone</p> <p>5. Display: LCD screen</p> <p>6. Display Digits: 3-1/2 digits</p> <p>7. Response Speed: 0.5 seconds</p> <p>8. Time Level: Fast Response (125 mS)</p> <p>9. Alarm function: "OL" is displayed when the input exceeds the range</p> <p>10. Automatic shutdown: Automatic shutdown after 15 minutes without any operation</p> <p>11. Battery: 9V carbon battery</p> <p>12. Operating temperature: 0~40℃ (32~140℉)</p> <p>Operating humidity: 10 ~ 90% RH</p> <p>Storage temperature: -10~60℃ (14~140℉)</p> <p>Storage humidity: 10 ~ 75% RH</p>