Flexzion Soil Moisture Sensor Meter Light pH Acidity Tester 3in1 Gardening Hydroponic Tool Analyzer for Outdoor Indoor Plant Flowers Fruits Vegetables Shrubs Grass Lawns 3 functions in one compact meter - measure the moisture PH content of the soil and the environmental light No battery required, simple and convenient to use Simply insert probe of the meter into the soil, switch to the setting you want to measure and read the scale Scientifically accurate, easy to read moisture, ph and light levels, promotes healthy plants Ideal tool compact and portable design for both indoor and outdoor garden plants care