Model Number:25359Material:plastic Origin:Mainland China Type:Watering Kits Features: Easy Installation Soil Moisture Sensor Wide Application Specification: Test the relay module: connect the relay module VCC to 5V, GND to ground, IN to GND, the relay jumps, and when IN is suspended, the relay recovers, so you can hear the relay "Kaka" sound repeatedly. Test the soil moisture sensor module: connect the fork probe and transmitter module with two DuPont lines, the transmitter module. VCC is connected to 5V, GND is grounded, just after power-on, the red power light is always on, green (blue) color indication. The lamp flashes faintly once, the fork probe is directly inserted into the water, and the green (blue) light is on. Connect the line of the pump to 5V, the black line is grounded, the pump works, pay attention to the test for 1 second, and it is not allowed to work in the air for a long time. Do not pour water directly on the sensor. The humidity of the water will rust the sensor. The kit can automatically water the vegetable garden, garden, and control the flower pot soil moisture. Type: Automatic Watering System Kit Material: Plastic Power Supply: DC 5V Power Bank (Not Included) / 4 x AA Batteries (Not Included) Package Included: 1 x Relay Module 1 x Soil Moisture Probe& Comparison Module 1 x Small Water Pump 1 x Battery Case 1 x USB Power Cord 10 x Connecting Line 1 x Pipe Do dropshipping ? Yes,we do.If you have any question please contact us. Production Material Safety? All products are 100% brand new, workable and checked carefully before sending out. When is the parcel sent? We will send out order within 5 workdays. The delivery time will vary according to different countries and will be affected by weather, public holidays and so on. If order doesn't received in declare time, please contact us. How about refund? Full refund if the item does not match the description or defective. If there are any other problems , Click on Help