5 Sets Soil Moisture Sensor, Resistive Soil Moisture Meter, Soil Hygrometer Sensor Test Kit with Corrosion Resistant Probe Digital Analog Signal Output for Garden Automatic Watering System

Coliao Resistive Soil Moisture Sensor with Corrosion Resistant Probe Specifications: Working Voltage: DC 3.3-12V Working Current: <20mA (Output Current: <30mA) Sensor Probe Length: 8cm/3.14 inch Sensor Pin Pitch: 5 mm Sensor Cable Length: 1.2 meters /3.94ft Sensor Connecting Port: XH2.54 2P DO Port: digital value output (DO output current is about 10mA) AO Port: analog value outputDigital Value Output Instructions: 1."+" connects power positive; "-" goes to negative. Don't connect reversely or the chip will be burnt out. There is a LED power indicator at the P mark on the board. It will be light if the module operates normally. 2.Clockwise/counter-clockwise rotate the blue potentiometer to increase/reduce the detection threshold. For example, DO outputs low level when the moisture reaches 50% now, then I clockwise rotate the potentiometer to increase the detection threshold. At this time, DO outputs a low level only when the moisture reaches a point higher than 50%. 3. If you clockwise rotate the potentiometer to an extent that the LED indicator which marked "S" is light, that means the testing threshold has been surpassed. Counterclockwise rotating to the end surpasses the threshold too. The module will not work well if the detection threshold is invalid. NOTE: The threshold adjustment only works for using the DO output. Package Includes: 5* Soil Moisture Sensor Module 5* Sensor Probes

• 【Soil Moisture Sensor】The corrosion resistance probe uses analog resistance to test soil moisture content. It can be used in the automatic watering system, garden, greenhouse, etc. Compatible with raspberry pi.
• 【Corrosion Resistant Probe】The waterproof sensor probe with high corrosion resistance ensures a long lifetime in the soil.
• 【Digital Analog Signal Output】The AO port on the soil humidity sensor outputs an analog value(voltage), and you can acquire the real-time data via the AD port of your single-chip microcomputer(MCU).
• 【Adjustable Threshold】Clockwise/counter-clockwise rotate the blue potentiometer to increase/reduce the detection threshold. On-board power and signal indicators make you know the working status of the board at a glance at any time.
• 【Easy to Use】It can automatically watering your plants and flowers according to monitor the soil moisture.This soil moisture detector outputs a low level from the DO port when the detecting humidity reaches the threshold value.