The UNI-T UT353 is a compact, high-precision sound level meter designed for quick and convenient monitoring of ambient noise. Equipped with a sensitive 1/2-inch condenser microphone and an easy-to-read backlit LCD display, the UT353 is suitable for both everyday use and more demanding tasks, such as in offices, schools, machine noise monitoring, industrial environments or public events.
The device measures sound levels between 30 dB and 130 dB with an accuracy of ±1.5 dB and a resolution of 0.1 dB, thus enabling the evaluation of both quiet and noisy environments. The UT353 offers two sampling modes: fast (125 ms) and slow (1000 ms), so that the measurement can be adapted to changing acoustic conditions.
The UT353 is equipped with functions for ease of use, such as result retention (Data Hold), recording of maximum and minimum values ​​(MAX/MIN), overload indicator (OL), automatic power-off and low battery level indicator. The backlit LCD screen (32 x 26 mm) allows you to read the results even in dimly lit rooms.
With its ergonomic design and weight of 116g, the UT353 fits comfortably in the hand and is easy to carry. The device works with three AAA batteries (accessory). The package also includes a windshield that improves the accuracy of outdoor measurements.

- Model UT353
- Volume 30-130 dB
- Accuracy ±1.5 dB
- Resolution 0.1 dB
- Frequency 31.5 Hz 8 kHz
- Sampling Fast: 125 ms; Slow: 1000 ms
- Data storage Yes
- Backlit LCD screen Yes
- MAX/MIN Yes
- Overload indicator (OL) Yes
- Automatic shutdown Yes
- Low battery indicator Yes
- Power supply 3x 1.5 V battery (R03/AAA)
- Display size 32 × 26 mm
- Weight 116 g
- Dimensions 150 × 52 × 27 mm