Features: This decibel meter adopted 1/2" electret condenser microphone for highaccuracy with 1.5dB and long-term stability. Use this decibel meter to get convincing data. The decibel meter has a wide backlits screen with analogs bar graphs, clearly display the noise level, convenient for users to quickly capture noise information. The built-in flashlight on the back for nighttime use. The MAXMIN function of this decibel meter allows you to easily record the maximums and minimums values between 30~130dB during the measurement time. The FAST Sample rate presets to 8x/second, and the SLOW sample rate is 1x/second. Features response rate control, multiple measurement modes,and data retention functions. Advanced circuit board technology and ABS housing to provide stability and durability. The wind shells allows the noise monitor to get reliable measurement data outdoors. Specifications: Material:ABS Measurement Ranges:30~130dB Frequency response: 31.5Hz~8KHz Display resolution: 0.1dB Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Decibel Meter