High sensitivity digital noise meter. Multi-position switch measurement, high sensitivity condenser microphone. Without contact, the test results can be displayed quickly and accurately. Condenser microphones use high-quality electronic components. There is a stable house on the back of the product, which is easy to measure and worry-free. The material is strong, drop resistant and durable, and can effectively prevent falling from a height. Quickly lock the maximum/minimum measurement data. Backlit display, no need to worry about darkness, you can turn the display on and off. Automatic shutdown, energy saving and power saving, automatic shutdown after about 10 minutes, without any operation. The comfortable non-slip silicone buttons are easy to operate and comfortable to Press. specification: Model: TA8151 Sensor: 1/2 inch condenser microphone Measurement accuracy: 1.5dB (at the reference sound pressure level, 94dB @ 1kHz2) Frequency response: 31.5HZ~8.5KHZ Frequency weighting characteristics: 1 AC/DC signal output: No Value retention: Yes Highest/lowest: yes Resolution: 4 bits, resolution 0.1dB Dynamic function selection: fast/slow Backlight display: yes Sampling rate: 2 times/sec Power supply: Two AAA batteries (not included) Unit of measurement: 30-130dB Colour:Black + Red Material:ABS Size:20.5x5.5x3CM LCD size: 36 x 33mm Package Contents: 1 * noise meter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.