Item Type: Sound Level Meter <br>Material: ABS, sponge <br>Model: AS844+ <br>Purpose: Suitable for noise measurement and monitoring in many industries such as traffic roads, automobile measurement, mechanical processing, home furnishing, reading halls, etc. <br>Calibration Sound Source: 94dB at 1KHz <br>Measuring Range: 30-130dBA / 35-130dBC <br>Accuracy: ±1.5dB <br>Resolution: 0.1dB <br>Dynamic Range: 50dB / 100dB <br>Overload Indication: OVER / UNDER <br>Frequency Weighting: Characteristics A and C <br>Digital Display: 3 1/2 Digits <br>Analog Bar Graph: 1dB / 1 Bar Graph <br>Sampling Rate: 20 Times/Sec <br>AC Signal Output: 1 Vrms/Full Bar graph <br>Dynamic Characteristics: FAST / SLOW <br>Data Storage Capacity: 15000 <br>Maximum Hold: MAXIMUM <br>Automatic Power Off: After 10 minutes of inactivity <br>Microphone: 1/2in Polarized Capacitor <br>Power Supply: 3.7V Lithium Battery 1000mAh x 1 / USDB 5V <br>Battery Life: 12 Hours (Continuous Use) <br>Temperature Measurement Range: 0-45℃ <br>Temperature Accuracy: ±2℃ <br>Humidity Measurement Range: 10-99%RH <br>Humidity Accuracy: ±5%RH<br>1、[LCD Display] Portable noise meter with 2.7in large LCD display screen for easy reading, real time display of current temperature (℃/℉ switchable) and humidity. <br>2、[Wide Measurement Range] High accuracy measurement, the measurement range is 30?130dBA / 35?130dBC, the frequency is 31.5Hz?8KHz, the resolution is 0.1dB, and the accuracy is ±1.5dB. <br>3、[Data Storage Function] Allows to store up to 15,000 sets of data, connect to a computer through a USB cable, support data record download, real time sampling analysis, graphics and data printing. <br>4、[Multiple Functions] Equivalent weighted sound pressure level of A and C, fast and slow dynamic characteristics mode, AC and PWM signal output are available, low battery indicator, automatic and manual power off. <br>5、[Widely Used] Equipped with a sponge ball and storage box, small and light, suitable for noise measurement and monitoring in many industries such as traffic roads, automobile measurement, mechanical processing, home furnishing, and libraries.Do not place the product in an environment that is too corrosive, humid and high temperature.<div>1 x Noise Meter</div><div>1 x Manual</div><div>1 x USB Data Cable</div><div>1 x Storage Box</div>