The LATNEX SM-130DB Sound Level Meter is a digital noise meter with an auto-shifting function that can be applied to the measurements of both environmental and mechanical noise. Features Test range:35~130dB Applicable standard: EN 61672 type2 Data hold Auto power off with disable function Frequency weighting: A, C Auto ranging Max/Min Time weighting: fast slow Specifications Sample Rate 1 Second Standard applied IEC 61672-1 class2 IEC651 Type2 ANSI14 Type2 Microphone 1/2 inch electret condenser microphone Resolution 0.1dB Accuracy ±1.8dB (ref 94dB@1KHz) Level range Lo: 35~80dB; Med: 50~100dB; Hi: 80~130dB Dynamic range 50dB Frequency range 31.5Hz~8KHz Part List 1 x SM-130DB Sound Level Meter 1 x User's Manual 1 x 9V battery x Soft pouch carrying case 1 x Wide screen Download the Sound Meter User Manual