SNDWAY SW525B Wall-mounted DB Sound Level Meter Noise Tester with USB Data Storage Transfer & USB Communication

Model: 525A Measuring range: 30-130db Frequency range:31.5hz-8.5khz Response time:fast Microphone:6mm capacitance microphone Power supply;DC5V 1A micro USB outlet Operating condition: 0-40 degree Dimension:210x130x28mm Weight: 453g Features and Functions: 1. Accuracty: + -1.5dB In Standard audio: 94dB 1 khz 2. Measurement Range: 30 - 130dB 3. Frequency Response Range: 31.5 hz - 8.5 khz 4. Frequency weighting: A (Environmental Noise) of Weighting 5. Fast answer