MT-901A 1.7" LCD Portable Digital 30~130dB Sound Level Meter Noise Tester - Black + Blue (1 x 9V)
Measuring level range: 30dB~130dB Operating conditions: 20’C~60’C 10%~90% RH; Storage conditions: -20’C~60’C 10%~75% RH; Accuracy: +/-1.4dB; Resolution: 0.1dB; Frequency range: 31.5Hz~8KHz; Dynamic range: 50dB; Data update: 0.5 second; Frequency weighting: dBA or dBC; Display: 3 1/2 digits LED display; Dimension(L x W x H): 144 x 55 x 38mm; Power supply: 1 x 9V battery