3 in 1 Moisture pH & Light Garden Soil Probe Meter Perfect for Monitoring Plant Soil Conditions! Red Ladybug 3-in-1 Moisture, pH Light Garden Soil Meter General Features: Red ladybug design 3-in-1 Moisture, pH Light Garden Soil Meter No batteries required Moisture indicator tells if you are under or over watering at the root level pH indicator measures soil acidity and alkalinity Light indicator measures whether plants are getting adequate lighting