6691506459115520 Businesspro Mall M5Stack Earth Moisture Unit (行貨1年保養) EARTH unit is a Soil Moisture Sensor for measuring the moisture in soil and similar materials. The soil moisture sensor is pretty straight forward to use. The Product #: businesspro-M5Stack Earth Moisture Unit (行貨1年保養) https://www.businesspro.store/i/XxePBggAA 2022-01-19 Regular price: $HKD$18.0 Available from: Businesspro MallIn stock