Feature: 1. Super Large LCD Display: This sound level meter features a super large HD backlit LCD screen which provides a clear display and easy readings. 2. Wall Mounted Design: This LCD sound level reader features a wall mounted design that is easy to set up and great for continuous monitoring. 3. High Accuracy: This decibel meter is highly accurate, with a measurement range of 30 to 130 dB, accuracy of ±1.5dB, and a frequency response range of 31.5Hz to 8.5KHz. 4. Excellent ABS Material: This noise meter is made of excellent ABS material, which is sturdy and wear resistant, not easy to be damaged and has a long service life. 5. Wide Application: This wall mount decibel reader has a wide range of applications and can be used at home, school, office, factory, and so on. Specification: Item Type: Wall Mounted Noise Meter Material: ABS Battery Model: Lithium Battery ( Shipped With Built In Battery ) Battery Capacity: 3600mah Storage Function: 2 Seconds/Pen, Can be stored for one year Communication With Computer: Communicate With Computer Through USB Cable Alarm Prompt ( Sound and Display ): Yes Alarm Output: Yes Time Display: Yes Temperature Display: Yes Humidity Display: Yes Power Supply: Type C USB Measuring Range: 30-130dB Accuracy: ±1.5dB ( Based on Standard Sound Tone, 94dB at 1KHz) Frequency Response: 31.5 Hz-8.5 KHz Frequency Weighting: A Weighting Response Time: FAST Microphone: 6mm Condenser Microphone Digital Display: 3 Digits Resolution: 0.1dB (<100dB) 1dB (>100dB) Operating Temperature: 0-40℃, 10%-80%RH Operating Humidity: -10-60℃, 10%-70%RH. Package List: 1 x Wall Mounted Noise Meter1 x Data Cable1 x Manual