<p>30-130DB: The measurement range is 30-130dB, which is very suitable for sound or noise measurement. (Normal conversation sound is 40-60dB).</p> p> <p></p> <p>WIDE APPLICATION: This sound level meter is suitable for monitoring sound quality in factories, offices, homes, schools, theaters, audio systems and construction sites .</p> <p></p> <p>MAIN FUNCTION: With maximum and minimum hold function. Data hold function. Red backlight alarm and buzzer alarm. Automatic or manual power off function. temperature measurement.</p> <p></p> <p>HIGH PRECISION: This sound level meter is a high sensitivity sensor, fast measurement and more accurate.</p> <p></p> <p>CLEAR READING: The product adopts 4-digit display, which makes the reading data clearer and more convenient.</p> <p></p> <p>Specifications:</p> <p ></p> <p>Brand: SMART SENSOR</p> <p></p> <p>Model: ST9604</p> <p></p> <p>Measuring range: 30-130dBA </p> <p></p> <p>Accuracy: ± 1.5 dB reference SPLpoint at 94 dB at 1 KHz</p> <p></p> <p>Frequency weighting: One weighting< /p> <p></p> <p>Frequency range:31.5Hz-8.5KHz</p> <p></p> <p>Sampling rate:2 times/second</p> < p></p> <p>Data Hold:Maximum and Minimum Hold</p> <p></p> <p>Digital Display:4digits</p> <p></p> <p>Resolution : 0.1dB</p> <p></p> <p>Temperature measurement range: 10°C~50（14F-122F)</p> <p></p> <p>Accuracy: ±2</p> <p></p> <p>Resolution: 0.1℃</p> <p></p> <p>Microphone: 1/2inch electret condenser microphone</p> <p> </p> <p>Power supply: AAA battery X 3 (not included)</p> <p></p> <p>List of packages:</p> <p></p> <p>1 * sound level meter</p>