Cadrim Digital Sound Level Meter Portable Sound Meter Data Logger Decibel Noise Meter Tester 30-130dB Auto OFF Alarm Function Max/Min Hold Sound Measure LCD Screen 9V Battery Noise Measurement Tester

【Please Note】1. When display 20-40 dB, it is normal in a quiet room where no one is talking. The sound of normal conversation is 40-60dB. 2. If you have any questions or problems, please contact the seller directly for help~ Do not return it directly.
【Fast & Precise】Accuracy within +/- 3.5dB; resolution: 0.1dBA; response speed: 0.5 seconds; time level: fast response (125mS); Sound level frequency weighting: A
【Auto Shutdown & Alarm Function】Automatic shutdown after 15 minutes without any operation; "OL" will be displayed when the input exceeds the range.
【High Quality LCD Screen】High display quality, low eye damage, low power consumption, low radiation.
【1/2" Polarized Condenser Microphone】Great tool for checking, monitoring or controlling the sound level of any environments.
【Battery & Range】9 V carbon zinc-manganese battery(included); frequency range: 31.5Hz~4kHz, measuring range: 30~130dB.
【Compact and Lightweight Design】Fit perfectly in the palm of your hand, suitable for use indoors and outdoors measuring noise levels in factories, offices, theaters and audio systems.