Catalog > Consumer Electronics > Kits > Smart Kits Soil Temperature and Humidity Sensor Soil Temperature Humidity Sensor BMT SOIL MOISTURE SENSOR KIT SOIL TEMPERATURE AND HUMIDITY SENSOR ,SOIL MOISTURE SENSOR BOARD AND SENSOR PROBE KIT. OPERATING VOLTAGE 3.3~5VDC 25.78 ZAR inc for 1 Each 0 in Stock Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Overview This is a simple water sensor can be used to detect soil moisture when the soil moisture deficit module outputs a high level, and vice versa output low. Use this sensor to produced an automatic plant watering device, so that the plants in your garden can be managed without people.Usage : Soil moisture module is most sensitive to the ambient, generally used to detect the moisture content of the soil.When the module can not reach the threshold value, DO port output high, when the the soil humidity exceeds a set threshold value, the module D0 output lowThe small board digital output D0 can be connected directly to the MCU to detect high and low, to detect soil moistureSmall board digital output DO can directly drive the buzzer module or relay module in our store, which can form a soil moisture alarm equipmentSmall board analog output AO and AD module connected through the AD converter, you can get more precise values of soil moisture Specifications Sensitivity adjustable via the blue digital potentiometer adjustmentOperating voltage : 3.3~5VModule dual output mode, digital output, analog output more accurateWith fixed bolt hole for easy installationPCB size : 3x1.6cmPower indicator (red) and digital switching output indicator (green)Comparator LM393 chip, very stableConnections :VCC connect to 3.3V-5VGND connect to GNDDO digital value output connector(0 or 1)AO analog value output connectorKit Contents :Sensor probeDetecting boardCables