Hanging Noise Meter 30-130dB 31.5-8.5KHz USB Tester Gauge Level Sound Digits Digital Powered 3 Meter Display Noise with for Home Cafe Restaurant

Features: High performance Built-in capacitive microphone sensor three conductive layers determine provide quick frequency response and excellent sensitivity for lighter diaphragm and faster response speed. Digital display Equipped with three 3.0-inch high-definition digital tubes showing clearly and directly the measuring data on the 3-digits screen. Quick response Support ultra-fast response time and rate with measuring angle of 30-130dB and accuracy of 1.5dB. Alarm function Build-in alarm reminder you can set and adjust and alarm value and lower limit freely. When alarming the indicator light flashes accompanied by a buzzing sound with adjustable alarm time of 6-120s and volume of 1-3 levels. Easy to use Wall-mounted design the sound-level meter can be hung on the wall to save the space and work continuously simply powered by a USB cable. Specifications: Type: digital noise meter Material: ABS Item Color: black Measuring Range: 30-130dB Accuracy: +1.5dB (reference sound pressure level 94dB/1KHz) Frequency Range: 31.5-8.5KHz Frequency Weighting: A Response Time: fast Microphone: 6mm capacitance microphone Display: 3pcs 3-inch digits display Reslution: 0.1dB (less than 100dB); 1dB (more than 100dB) Alarm Reminder: support Alarm Output: support Power Supply: DC 5V/1A (USB) Operation Conditions: 0-40 degrees Celsius 10-80% RH Storage Conditions: -10-60 degrees Celsius 10-70% RH Storage Function: 2secs/time can be stored for a year Communication: connecting PC via USB Size: 21*13*3cm/8.25*5.11*1.18inch(L*W*H) Weight: 611g/21.55oz