3-in-1: tests moisture， pH value and light level using (2) 20 cm probe and a light sensor

Compact and portable: it is convenient to use it indoor， outdoor or in your greenhouse

High accuracy and rapid respond: there are 3-calibration tables， you can respectively get the accurate value immediately

No battery needed: environmentally friendly because it needn't any battery or electricity， just plug in the probe to your object

Promote healthy plants: it ensures and maintains the health and quality of your greenery， by using it， you can know when to water， control pH level and whether the plant getting adequate sunlight

pH range: 3.5-8 pH (3.5-6.5 acid， 7-8 alkali)

Moisture range: 1-10(1-3 dry， 4-7 NOR， 8-10 wet)

Relative light: 0-2000 lux (0-200 low， 200-500 low plus， 500-100 bullet 080 NOR 1000-2000 high)