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 â€“ 110 dB||Two Ranges: Low (35 â€“ 90 dB) and High (75 – 130 dB)|
|Resolution||0.1 dB||0.1 dB|
|Accuracy||Â± 3 dB||Â± 1.5 dB|
|Frequency Range||300 â€“ 10,000 Hz||30 â€“ 8,000 Hz|
|Stand-alone operation (on-device display)||✓|