Product Description:

REAL INSTRUMENTS SOUND DECIBEL METER - Compact, Lightweight Design, Easy to Use. There is a calibration knob. You can make use of the calibration function to ensure the accuracy of measuring noise value, reducing error. With a wind-resistant ball, while reducing the effects of wind noise. It is Designed to fit comfortably in the palm of your hand. Auto power-off or manual shutoff by pressing the power button for two seconds. MAX/MIN Hold Function will hold the highest/lowest reading until a higher/lower reading is picked up. Normally you don’t need to calibrate it because it was calibrated before delivery. There is a a calibration knob. You can find some tool fit the knob size to poke into the knob. Like needle, small cross screwdriver, iron nail, toothpick and so on.

Product Specifications:

Measuring Range: 30~130dBA Accuracy: ±1.5dB Frequency Response: 31.5Hz~8.5KHz Digital Display: 4 digits Resolution: 0.1dB Working Temperature: 0~40℃ Working Humidity: 5.10~80％RH Storage Temperature: -10~60℃ Storage Humidity: 0~90％RH Power supply: 3*1.5V AAA Battery(Included).