Feature: 1. With large LCD high-definition color screen display, the measurement results can be visually displayed and easy to observe. 2. 90-130dB alarm level setting range, once the measured value is greater than the alarm level, it will maintain the maximum value. 3. It is equipped with sponge balls and storage bags, compact in size and easy to carry. 4. Support frequency analyzer level recorder, FFT analyzer, graphic recorder and other AC and DC signal output. 5. It is suitable for inspecting, monitoring or controlling the sound level of individuals, families, businesses, learning, industry, etc. 6. It can be used for real-time noise detection in garage, office and workshop to ensure the safety of sound environment. Specification: Condition: 100% Brand New Item Type: Noise Meter Material: Plastic Model Number: AS834+ Accuracy : ±1.5dB Frequency Range: 31.5Hz-8.5KHz Dynamic Range: 50dB Measure Range: 30-130dBA,35-130dBC Frequency Weighting: A and C Weighting Digital Display: 4 Digit Resolution: 0.1dB Sampling Speed: 2 Times/Second Analog Bar Graph: One Bar is 1dB AC Signal Output: 0.707V rms at FS DC Signal Output: 10mV/dB Time Weighting: Fast/Slow Power Supply: 9V Battery (Battery Not Included) Operation Temperature: 0°C-40°C(10%-80%RH) Storage Temperature: -10°C-60°C(10%-70%RH) Package List: 1 x Noise Meter (Battery Not Included)1 x Instruction Manual1 x Cloth Bag Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.