Sound Level Meter (SLM-BTA, discontinued)
Specifications and User Guide
-Primary Test (stand alone): Use the Power button to turn on the device. The LCD panel should display a reading of sound level, in dB.
-Secondary Test (connected to a LabPro, CBL 2, Go! Link, or ULI): Connect the device to a LabPro (or ULI) and run the data-collection program. Open a file in the Probes & Sensors folder under the Experiment list. A reading should appear on the main screen of the data-collection program. Note: The older Sound Level Meters do not auto-ID.

What is the difference between the Sound Level Sensor and the Sound Level Meter?
What advantages does a Vernier sound level sensor have over a smartphone sound level app?
Why doesn't my sound level meter read below 40 dB?
What is the difference between "A weighting" and "C weighting"?

Sensor: Electric condensor microphone, 13.2 mm
Power: 4 AAA batteries
Display: 18 mm 3 1/2 digit LCD
Input ranges: 35 dB to 90 dB
75 dB to 13 dBC
Frequency range: 31.5 Hz to 8,000 Hz
Resolution: 0.1 dB
Accuracy: 1.5 dB (ref 94 dB at 1 kHz)
Response: Slow, 500 ms; Fast, 200 ms
DC Output: 10 mV/dB
AC Output: 1.0 Vrms corresponding to each range setup

-Calibrate? No
-If calibration is a concern, additional equipment is needed to calibrate the sensor.

Sound Level Sensor (SLS-BTA)
Microphone (MCA-BTA)