- Environmental Sciences
4 in 1 Soil Survey Instrument can test moisture of soil, pH value, temperature and environment sunlight intensity using a 200 mm probe. The unit has back-light function.
Sunlight (9 levels): LOW-, LOW, LOW+, NOR-, NOR, NOR+, HIGH-, HIGH, HIGH+
Moisture (5 levels): DRY+, DRY, NOR, WET, WET+
pH Value (12 levels): 3.5 to 9.0 (0.5 resolution)
Temperature: -9 to 50°C / 16 to 122°F (1°C/F resolution)