Decibel Meter, Portable Sound Level Meter, 30-130dB Digital Decibel Meter with A-Weighting, Fast/Slow Mode, Max Data Hold, Ultra-Light Clip-On Decibel Meter for Home, Factory, Classroom

Compact and Portable: As small as a pen and weighing only 1.76 oz, it's easy to carry and store. The pocket clip design allows you to securely attach it to your pocket, laptop, etc., preventing it from being easily dropped and lost. The pen-style design ensures the decibel meter fits comfortably in your hand, and the anti-slip design on the sides and back ensures the decibel meter is easy to hold and resistant to drops.

Wide Range, High Precision: This decibel meter uses a precise electret condenser microphone to capture sound, measuring sound levels from 30 dB to 130 dB. It is factory calibrated with a high accuracy of ±1.5 dB and a frequency range of 31.5 Hz to 8 kHz.

Widely applicable for monitoring noise levels in communities, home theaters, audio systems, automobiles, workshops, schools, offices, and factories. Fast and Slow Measurement: The SPL has the function to convert between fast and slow response rates, more specialized features for a wider range of uses. In FAST mode, the sensor samples the signal 8 times per second, which is suitable for measuring transient noise or instantaneous noise variations; in SLOW mode, it samples 1 time per second, which is suitable for continuous noise measurements and indicates the average level of fluctuating noise. Multifunctional: MAX lock function to continuously record the highest measurements during the sampling time, easy to read and record data; A low battery indicator will appear on the screen when the battery is low to remind the user to replace the batteries in time. The sound level indicator illuminates green when below 60 dB and red when above 60 dB as a visual alert. A-Weighted Measurement: This noise measurement device uses A-weighting to simulate the frequency of low-intensity sounds perceived by the human ear; it is more accurate and professional for ambient noise detection. 48-Month Warranty: We provide an unconditional 48-month warranty and lifetime after-sales service. Calibration: Step 1: Press and hold the SLOW/FAST button and the power button simultaneously. After powering on, briefly press the power button. The screen will display MAX to indicate that it has entered calibration mode. Step 2: Set the standard source signal to 94dB, then align the measuring device with the standard source signal. Wait for the reading on the measuring device to stabilize at 94dB, press the SLOW/FAST button to save, then press the Power On/Off button to restart the device. Calibration is complete.