The Sound Level Sensor (SLS-BTA) is a lower cost alternative to the Sound Level Meter (SLM-BTA, discontinued). It is a simple, easily-operated sensor to measure and investigate sound levels in typical classroom environments.
The Sound Level Meter offers greater accuracy and a greater range than the Sound Level Sensor, allowing deeper investigation of sound levels in a variety of environments and situations. But, it is considerably more expensive.
The following table may be helpful in determining which sensor fits your needs:
| Feature | Sound Level Sensor | Sound Level Meter |
|---|---|---|
| Weighting | A | A and C |
| Range | Single Range: 55 – 110 dB | Two Ranges: Low (35 – 90 dB) and High (75 – 130 dB) |
| Resolution | 0.1 dB | 0.1 dB |
| Accuracy | ± 3 dB | ± 1.5 dB |
| Frequency Range | 300 – 10,000 Hz | 30 – 8,000 Hz |
| Stand-alone operation (on-device display) | ✓ | |
| Requires batteries | ✓ | |
| Order Code | SLS-BTA | SLM-BTA |
See also:
What advantages does a Vernier sound level sensor have over a smartphone sound level app?