MASTECH MS6708 Digital Sound Level dB Meter 30dB~130dB

Features: Sound Level Range: 30dB~130dB; Large Digital LCD Display with Bar Graph; Fast/Slow Selection; Weighting A/C Selection; Back Light and Auto Power Off; Data Hold and MAX Mode; Auto range; Low battery indication;Specifications: Sound pressure accuracy: 1.5 dB (sound pressure standard, 94 dB @ 1KHz). Sound pressure accuracy: 5 dB (sound pressure standard, 94 dB @ 8KHz). Sound pressure frequency response: 30Hz - 8KHz. Dynamic range of sound pressure: 50 dB (for each measurement gear level). Sound pressure measurement scope: 30-130 dBA, 35-130 dBC. Sound pressure frequency weighting characteristics: A and C characteristics. Dynamic characteristic of sound pressure: FAST 125ms, SLOW 1sec Microphone: polarized capacitive microphone. Digital display: 4-digit, resolution: 0.1 dB, sampling rate: 2 times/sec. Analog bar display: Each analog bar represents 1 dB, sampling rate is 20 times/sec. Measurement gear level: 30-80 dB, 40-90 dB, 50-100 dB, 60110 dB, 70120 dB, 80-130 dB, 6 gear levels in total. Automatic shifting gear level: microcomputer will automatically select the best gear level in the range from 30 to 130 dB. Below or above limit prompt: indicated with UNDER or OVER display.