Why does my StudSensor tool fail to scan properly even with the green TruCal® LED illuminated?

The surface may be too thick or dense for standard scanning. While your StudSensor stud finder has successfully calibrated itself, it won't be able to detect increases in density to identify studs. If your StudSensor stud finder includes the DeepScan® feature, turn it on by clicking the ON button twice or using the dedicated switch, and re-scan. For additional information on DeepScan® mode for your specific model, please refer to the instructions.

If your StudSensor tool is in DeepScan® mode and continues to deliver no results, it could be that you started directly over a stud. Just release the on/off switch, move a few inches to the left or right, hold the device flat against the wall and try again.