| Specifications | Range | Best Accuracy |
| Model | UT351 | |
| Range | 30～80dB | ±1.5dB |
| 50～100dB | ±1.5dB | |
| 60～110dB | ±1.5dB | |
| 80～130dB | ±1.5dB | |
| Frequency | 31.5Hz～8000Hz | √ |
| Frequency Weighting | A&C | √ |
| Sample Rate | FAST: 8 Times/s | √ |
| SLOW: 1 Times/s | √ | |
| Features | ||
| Analogue Outputs | AC: 0.707Vrms full scale;Output impedance: around 600Ω | √ |
| DC: 2Vrms full scale; 10mV/dB; Output impedance: around 100Ω | √ | |
| Data Hold | √ | |
| Auto Power Off | √ | |
| Low Battery Indication | ≤4.8V | √ |
| MAX Mode | √ | |
| MIN Mode | √ | |
| High Alarm | Display “OVER” | √ |
| Lower Alarm | Display “UNDER” | √ |
| LCD Backlight | √ | |
| Analogue Bar Graph | 30～130dB | √ |
| General Characteristics | ||
| Power | 1.5V Batteries (LR6) X 4 | |
| LCD Size | 53mm X 41mm | |
| Product Color | Red and Grey | |
| Product Net Weight | 330g | |
| Product Size | 273mm X 70mm X 39 mm | |