Features:
    ● LCD screen with backlight
    ● Real-time display of current A-weighted sound pressure level
    ● Sound level measurement range: 30~130dB
    ● Range selection function
    ● FAST time weighting measurement
    ● Maximum/minimum display function
    ● Sound output function
    ● Low battery prompt function
    ● Auto power off function
    ● One 9V laminated battery power supply
Application:
    Widely used in machine building, architectural design, transportation, environmental protection, medical and health, and defense engineering.