Soil Moisture Sensor can be used to detect the moisture of soil or your pet plant's water level, let the plants in your garden reach out for human help. With the Octopus Electronic Bricks interface can very easy to used with the sensor shield V4.0. https://elecena.pl/product/6057291/soil-moisture-sensor 2016-05-07 https://elecena.pl/product/6057291/soil-moisture-sensor 2025-12-18