Yechiry Wall Mounted Decibel Meter, Noise Level Measuring Device, Sound Pressure Monitor with Alarm Function, 30-130dB Range, USB Powered, Ideal for Home, Office, School & Industrial

• [Versatile Application Scenarios] From quiet home offices to noisy industrial sites, this sound level meter adapts to diverse environments. it's perfect for schools, hospitals, laboratories, construction sites, and entertainment venues. with adjustable alarm functions and multiple measurement modes (a/c weighted), it serves both casual users and professionals in noise assessment and environmental monitoring.
• [Long-lasting Battery &] The decibel meter comes with a powerful 1000mah built-in lithium battery offering up to 8 hours of continuous operation. it features a convenient charge alert function to remind you when power is low. the usb power supply option allows for flexible usage while charging, ensuring uninterrupted noise monitoring when you need it most.
• [Easy Wall Mounting & Space Saving] The wall mounted decibel meter features convenient mounting holes for effortless installation on any wall . its design ensures it doesn't take up valuable space while providing accurate noise measurements. perfect for both residential and commercial settings where space optimization is crucial.
• [Precise Digital Noise Measurement] This advanced sound level meter utilizes cutting-edge digital technology to deliver highly accurate measurements of environmental noise. it captures sound strength and frequency with a precision of ±1.5db, making it ideal for professional applications requiring reliable data. the 3-inch digital display clearly shows real-time measurements for easy monitoring.
• [Advanced Sound Processing Technology] Equipped with a digital microphone and sophisticated signal processing system, this device converts environmental sound into electrical signals, then into precise digital readings. the built-in processor analyzes noise characteristics thoroughly, providing comprehensive data for noise assessment and control in various environments.

1. WALL MOUNTED DESIGN: The wall mounted decibel meter has mounting holes that allow it to be easily mounted on the wall without taking up space. 2. FUNCTION: It is an instrument used to measure environmental noise. It uses digital technology to accurately measure the strength and frequency of sound. 3. OPERATING PRINCIPLE: The microphone collects sound signals from the environment and converts them into electrical signals. an AD converter converts the electrical signals into digital signals, which are then transmitted to a digital signal processor for processing and analysis. The processor calculates the strength and frequency of the noise and displays the results on the screen. 4. CHARGE DISPLAY FUNCTION: Wall mounted decibel meter has a built in battery and with a charge alert function, it is easy to remind charging and convenient to use. 5. WIDELY USED: It can be used in home, office, club, college classroom, hotel rooms, hospital wards, hotels, laboratories and other places, or used in industrial noise monitoring, environmental noise assessment, building construction noise monitoring and other fields. Specification: Item Type: Wall Mounted Decibel Meter Material: ABS Weight: Approx. 641g / 22.6oz Battery (Built In): Lithium Battery, 1000MAH Product Size: Approx. 23.7x12x2.7cm / 9.3x4.7x1.1in Wall Hole Distance: 8cm / 3.1in Sound Measurement Range: 30-130dB With Maximum Mode, Measurement with Sound Alarm Alert Function, Alarm Value Adjustable Microphone: Digital Microphone Accuracy: ±1.5dB (In Reference Sound Pressure Standard 94dB 1KHa) Frequency Response: 31.5Hz-8.5KHz Digital Display: 3 Inch Digital Pipe Display (10.5 Inch Display) Power Supply: USB Power Supply (DC5V1A Adapter Excluded) Common Problems: Display Doesn't Show (1) USB Cable Is Damaged, Replace The USB Cable; (2) Power Adapter Is Damaged, Replace The Power Adapter; Instrument Maintenance: Cleaning Of The Case: Alcohol, Diluent, Etc. On The Chassis Especially The Windows Have Corrosive Effects, Therefore, When Cleaning, Use A Dryer Wet Cloth To Gently Wipe It. How to Use: 1. Power button Long press for 3 seconds to turn on or off the power. 2. Add key Press and hold for 3 seconds to turn on or off the alarm function. In voice measurement mode, click to switch between fast and slow speed. 3. Decrease key Press and hold for 3 seconds to turn on the maximum value lock function. In the noise measurement mode, click to switch between A weighted and C weighted. 4. Setting key Press and hold for 3 seconds to enter into the state of setting alarm value, at this time, you can see the corresponding function characters flashing, the number indicates the alarm value, press the increase or decrease key to adjust, press the power button to confirm the exit. Press this key to cancel the alarm. In hold state, press this key to cancel the function. 5. dB Sound Unit Symbol Normal display represents the noise measurement mode. 6. C weighted display symbol When C is displayed, it means C weighted mode (generally used for mechanical noise). No display indicates A weighted mode (generally used for sound that can be felt by the human ear). 7. S slow display symbol When S is displayed, it indicates slow measurement (1 time per second). Not displayed indicates fast measurement (1 time per 250 ms). 8. Maximum value lock function symbol When displayed indicates that the maximum value lockout function is turned on, and only the maximum sound value is displayed at this time. 9. Alarm value on symbol When displayed indicates that the alarm function is turned on. 10. Battery symbol When displayed, it means the built in battery is powered, no display when plugged into USB, it means the USB is powered and charging the battery, the built in battery is 1000mAH, it can be used for 8 hours under normal condition. Package List: 1 xWall Mounted Decibel Meter 1 x USB Cable