Hand Held Digital Sound Level Meter-TTESDM000

1.5v 130db 130dba 1db 4pcs 5db 6v 94db Alkaline Battery Automatic backlights Calendar function Calibration Sound Source Claender Accuracy construction sites Features data records storage Data Storage Quantity Digital Sound Level Hand Held Digital Held Digital Sound lcd LCD display screen Multifunctional style PWM signal output records storage Specifications Slow time weighting sound quality control weighting selection