HALJIA 5PCS Soil Hygrometer Humidity Moisture Detection Water Sensor Module with Dupont Cable 3.3V - 5V Automatic Watering System Compatible with Arduino Robot Smart Car

• The sensor is suitable for soil moisture detection. Can be used in module plant waterer device, and the plants in your garden no need people to manage.
• Operating voltage: 3.3V-5V; Dual output mode,analog output more accurate.
• Interface Description (4-wire) VCC: Power Positive 3.3V-5V; GND: Power Negative; DO: Digital output interface (0 and 1); AO: Analog output interface
• The blue potentiometer in the module is used to adjust the threshold of soil humidity. It is adjusted clockwise, and the controlled humidity will be larger, and counterclockwise will be smaller.
• Adjusting the soil moisture control threshold through the potentiometer can automatically control vegetable gardens, automatic watering of gardens, soil moisture control of home flower pots, various electronic games, electronic building blocks, arduino designs, etc.

Specification: The comparator uses the LM393 chip, which works stably. Equipped with fixing bolt holes for easy installation. The product can control the soil humidity in a wide range, and adjust the corresponding threshold through the potentiometer. When the humidity is lower than the set value, DO outputs high level, and when the humidity is higher than the set value, DO outputs low level. Working Voltage: 3.3V-5V PCB Board Size: 31× 14 mm Kit Weight: 7 g Application: Adjusting the soil moisture control threshold through the potentiometer can automatically control vegetable gardens, automatic watering of gardens, soil moisture control of home flower pots, various electronic games, electronic building blocks, arduino designs, etc. Interface Description (4-wire): VCC: 3.3V-5V GND: GND DO: Digital output interface (0 and 1) AO: Analog output interface Module instruction: 1. The sensor is suitable for soil moisture detection; 2. The blue potentiometer in the module is used to adjust the threshold of soil humidity. It is adjusted clockwise, and the controlled humidity will be larger, and counterclockwise will be smaller; 3. The digital output D0 can be directly connected with the single-chip microcomputer, and the high and low level can be detected by the single-chip microcomputer, thereby detecting the soil moisture. Packing List: 5 x Soil moisture detector module 5 x Probe 10 x Jumper cables