Protimeter Surveymaster Manual De Instrucciones página 8

Measurements:
In both modes, the numeric measurement and color LED will be
shown as well as the "DRY" (green) or "AT RISK" (yellow) or
"WET" (red), based on the measurement shown.
7-16.9 DRY (Green), 17-19.9 AT RISK (Yellow), 20-99.9 WET (Red)
70-169 DRY (Green), 170-199 AT RISK (Yellow), 200-999 WET (Red)
Page 6 Protimeter Surveymaster