Soil Humidity Soil Moisture Sensor Module Corrosion Resistant

SKU : F03009 Name : Soil moisture sensor Voltage : DC 3.3-12V Current : Working lt;20mA, Output lt;30mA Interface : + - DO AO (DO Digital Quantity, AO Analog Quantity) Application : Detection of soil temperature Principle : Soil moisture probe detects temperature and voltage comparator judges humidity. When humidity is greater than the set value, DO outputs low level. OPERATION a. Connect the positive pole of the power supply and the negative pole of the power supply. Do not connect the negative pole, otherwise the chip may burn out. When the power supply is connected, [P] power indicator lights up. The module works normally. b. Clockwise/counterclockwise adjustment of blue potentiometer can improve/decrease the detection sensitivity of probe. c. When the potentiometer is clockwise adjusted to the output indicator of [S], it indicates that the range of regulation has exceeded the test threshold, and when the counter-clockwise adjustment is unable to adjust, it exceeds the threshold. When adjusting, they should not exceed the threshold value, otherwise they can not be used normally. Potentiometer regulation is used only for the mouth of [DO], and is not related to the output of [AOI. d. The output of [AOI is analog (voltage), which can be detected directly through AD port of single chip computer.6