Uni-T UT353BT Mini Sound Level Meter with Bluetooth Connectivity

The Uni-T UT353BT Mini Sound Level Meter is a compact and reliable digital instrument designed for precise noise level monitoring in a wide range of environments. This portable device features a high-quality 1/2-inch condenser microphone and offers a measurement range of 30 to 130 dB, making it suitable for both professional industrial applications and personal use. With its integrated Bluetooth connectivity, the meter seamlessly pairs with the iENV mobile application, allowing users to perform real-time data analysis, logging, and export directly on their smartphones or tablets.

Advantages

The primary advantage of the Uni-T UT353BT is its combination of portability and advanced functionality. Its lightweight, ergonomic design ensures ease of use during extended measurement sessions, while the backlit LCD screen provides clear visibility in various lighting conditions. The device offers flexible sampling rates, allowing users to switch between fast and slow modes to capture transient or steady noise levels accurately. Furthermore, the inclusion of Bluetooth technology significantly enhances workflow efficiency by enabling remote monitoring and digital data management, eliminating the need for manual record-keeping.

Suitable for

• Industrial noise safety compliance monitoring
• Environmental noise testing in residential or commercial areas
• Acoustic research and sound system calibration
• Educational purposes and hobbyist sound level assessments

When it may not be suitable

This device is not intended for high-precision laboratory-grade acoustic analysis that requires Class 1 sound level meter certification. It is designed for general-purpose noise measurement and may not be suitable for legal noise enforcement or specialized scientific applications requiring specific international acoustic standards beyond its current specifications.

Key specifications

• Measurement range: 30 to 130 dB
• Accuracy: ±1.5 dB
• Resolution: 0.1 dB
• Frequency range: 31.5 Hz to 8 kHz
• Sampling frequency: Fast (125 ms) and Slow (1000 ms)
• Connectivity: Bluetooth for iENV app (Android/iOS)
• Display: Backlit LCD (32 x 26 mm)
• Power supply: 3 x 1.5 V (R03) batteries
• Dimensions: 150 x 52 x 27 mm
• Weight: 116 g

How to use

To begin using the device, insert the provided batteries into the compartment on the back. Power on the unit using the dedicated button. For accurate readings, ensure the microphone is pointed toward the sound source and use the included windscreen if measuring in outdoor or windy conditions. You can toggle between fast and slow sampling modes depending on the nature of the noise. To utilize the Bluetooth feature, download the iENV app on your mobile device, enable Bluetooth, and connect to the meter to start live data streaming and logging.

What to consider before purchase

• Ensure your mobile device is compatible with the iENV application.
• Verify if the measurement range and accuracy meet your specific regulatory or project requirements.
• Consider the environment of use; while portable, the device is not waterproof.

Usage recommendations

For the most accurate results, hold the meter at arm's length or mount it on a tripod to minimize the influence of the user's body on sound reflections. Always use the included windscreen when measuring outdoors to prevent wind noise from interfering with the microphone readings.