4-in-1 Digital Decibel Meter with Clock, Temperature & Humidity Display

The 4-in-1 Digital Decibel Meter is a large-screen environmental monitoring device that displays sound level, time, temperature and relative humidity simultaneously.

Its bright digital display makes important environmental information easy to read from a distance, while the color-coded sound indicator provides a quick visual indication of the surrounding noise level.

Ideal for classrooms, offices, workshops, studios, libraries, meeting rooms, homes and other indoor environments where monitoring noise and comfort conditions is important.

4-in-1 Monitoring

The display combines four useful functions:

• Sound Level / Noise – dBA
• Digital Clock
• Ambient Temperature – °C
• Relative Humidity – %RH

All readings can be viewed simultaneously on the large display.

Technical Specifications

• Product Type: Digital Sound Level & Environmental Monitor
• Functions: Decibel, Clock, Temperature & Humidity
• Sound Measurement: A-Weighted (dBA)
• Sound Measurement Range: 30–130 dBA
• Sound Resolution: 0.1 dBA
• Typical Sound Accuracy: ±1.5 dBA
• Frequency Range: 50Hz–8.5kHz
• Display Type: Large Digital LED Display
• Temperature Display: °C
• Humidity Display: %RH
• Noise Indicator: Multi-Color Bar Display
• Noise Status Indicator: Visual Face Icons
• Clock: Digital Time Display
• Power: Rechargeable / USB Powered, depending on version
• Installation: Desktop or Wall-Mount, depending on supplied accessories
• Application: Indoor Environmental Monitoring

Real-Time Decibel Monitoring

The built-in sound sensor continuously monitors the surrounding noise level and displays the result in dBA.

The A-weighted measurement is designed to represent sound levels in a way that more closely corresponds to human hearing.

The large numerical display allows the current sound level to be checked quickly from across a room.

Color-Coded Noise Indicator

In addition to the numerical dBA reading, the display provides a multi-color visual noise indicator.

As the surrounding sound level increases, the indicator progresses through different colors, providing an easy visual warning when an environment becomes louder.

The face icons also provide a quick visual indication of the general noise condition.

This feature is especially useful in:

• Classrooms
• Libraries
• Offices
• Meeting Rooms
• Workshops
• Waiting Areas

Temperature Monitoring

The integrated temperature sensor continuously monitors the surrounding indoor temperature and displays the reading directly on the screen.

This allows users to monitor room comfort conditions without requiring a separate thermometer.

Humidity Monitoring

The built-in humidity sensor measures relative humidity (%RH).

Monitoring humidity can help users evaluate indoor comfort and environmental conditions in offices, classrooms, laboratories, storage rooms and other indoor spaces.

Large Easy-to-Read Display

The large high-contrast digital screen is designed to be visible from a distance.

It simultaneously displays:

• Current Sound Level
• Time
• Temperature
• Humidity

This makes the device particularly useful for shared spaces where several people need to see the environmental conditions at a glance.

Applications

Ideal for:

• Schools & Classrooms
• Libraries
• Offices
• Meeting Rooms
• Workshops
• Factories
• Laboratories
• Recording & Music Rooms
• Studios
• Hospitals & Clinics
• Hotels
• Restaurants
• Waiting Areas
• Smart Home Monitoring
• Indoor Environmental Monitoring

Important Note

This product is intended primarily for general environmental noise monitoring and indication.

Unless the specific model is supplied with a recognized calibration certificate, it should not be considered a substitute for a certified professional sound level meter when measurements are required for occupational safety, regulatory compliance or official acoustic testing.

Exact temperature range, humidity range, battery capacity, dimensions and alarm settings can vary between versions of this product.

Package Includes

• 1 × 4-in-1 Digital Decibel Meter with Clock, Temperature & Humidity Display
• 1 × USB Power / Charging Cable

Mounting accessories and other included items may vary depending on product version.