FUNCTION 3 in 1: - Integrated function of soil moisture meter kit, soil pH meter & sunlight meter with light gauge function. This ph meter for soil testing can't be used to test pH value of any other liquid.SCIENTIFICALLY ACCURATE & RELIABLE: Easy to read gardening soil moisture meter for plants digital, ph and light levels, promotes healthy plants Let you know your solar soil plant care: when to water, control PH level, determine if plant getting adequate lightHOW TO USE: Simply insert probe of the soil ph meter for agriculture into the soil to remaining about 10mm outsider, switch to the setting you want to measure and read the scale. For example: Choosing the MOIST, scale of 1-3 (red parts) means needing watering, 4-7(green parts) means suitable, 8-10 (blue parts) means that too wetREADINGS: Ph meter soil testing Moisture readings register on a scale of 0 (dry) to 10 (wet), light readings range from 0 (dark) to 2000 (light), and pH reading between pH 3.5(acidic) and pH 8 (alkaline) are represented.INDOOR & OUTDOOR : This soil tester doesn't need battery, it works by the probe and light sensor, energy saving and environmental protection. This soil ph meter is lightweight and portable, easy to carry around for outdoor use. Plant Care New 3 in 1 Hydroponic Plants Soil Moisture PH Light Meter good for agriculture soil testing use. Farming tool aquaculture solution for terrace garden and perfect farming equipment for soil meter agricultrue.