Some Light Sensors were produced with an incorrect sticker that labels the 3-position switch on the Light Sensor. The switch should be labeled:
Range (lux)
0-6000
0-600
0-150,000

If instead the switch is labeled with units of µS, the sticker was intended for use with the Conductivity Probe. If you have a sensor that is incorrectly labeled, please contact Vernier for a replacement label.