
| Specification | Details |
| Brand | Mextech |
| Model | SL4012 |
| Product Type | Digital Sound Level Meter |
| Measuring Parameters | LP, Lmax, Leq, LN |
| Measurement Range (A) | 30 ~ 130 dB |
| Measurement Range (C/F) | 35 ~ 130 dB |
| Leq Range | 30 ~ 130 dB |
| LN Range | 0 ~ 100% |
| Resolution | 0.1 dB |
| Accuracy | ±1 dB |
Mextech SL4012 Sound Level Meter – Professional Digital Noise & Sound Measurement Instrument
The Mextech SL4012 Sound Level Meter is a professional digital noise measurement instrument designed for accurate monitoring of sound pressure levels in industrial environments, factories, laboratories, workplaces, environmental studies, construction sites, machinery testing, vehicles, ships, and public noise assessment applications. It delivers reliable and precise sound level measurements for engineers, safety professionals, environmental consultants, and maintenance technicians.
The instrument supports multiple measuring parameters including LP, Lmax, Leq, and LN, allowing comprehensive sound analysis for environmental and industrial applications. It features selectable A, C, and Flat (F) frequency weighting modes along with Fast and Slow response settings, enabling users to evaluate different types of noise conditions accurately.
Equipped with a high-quality ½-inch electret condenser microphone sensor, the SL4012 provides stable and accurate readings across a wide measurement range. The large backlit LCD display ensures excellent visibility in low-light environments, while the built-in 94 dB calibration signal simplifies instrument verification and calibration procedures.
The meter includes advanced functions such as memory storage for 30 readings, alarm setting capability, RS232 PC interface support, low battery indication, and Auto/Manual power-off options. Its lightweight handheld design and durable construction make it suitable for both field inspections and laboratory testing.
Key Features
- Measures LP, Lmax, Leq, and LN parameters.
- Wide measurement range up to 130 dB.
- Selectable A, C, and Flat (F) weighting.
- Fast and Slow response modes.
- Built-in 94 dB calibration signal.
- High-precision electret condenser microphone.
- Large backlit LCD display.
- Memory storage for 30 readings.
- RS232 PC interface support.
- Alarm function with adjustable settings.
- Low battery indication.
- Auto and Manual power-off modes.
- Portable handheld design.
- Reliable industrial-grade performance.
- Suitable for environmental and workplace noise monitoring.
For more insights, contact us:
Email: sales@industrywaala.com
Contact Number: +91 7377 01 7377


