Welcome to our store! This DIY electronic irrigation kit is perfect for measuring moisture and controlling irrigation equipment accordingly. It includes a soil moisture probe for intelligent detection and sensing. The kit's sensitivity can be roughly adjusted with a potentiometer, making it suitable for daily irrigation needs. No programming is required as it does not include a single-chip microcomputer. Simply assemble the kit according to the provided schematic. The power supply is simple and flexible. You can use a 5V DC power bank or 4 AA batteries in the included battery compartment. Both options are convenient and easy to use. The kit includes: 1 x relay module, 1 x soil moisture probe, 1 x comparator module, 1 x small water pump, 1 x battery compartment, 1 x silicone water hose (approximately 90 cm long) and 12 x jumper wires. 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We will do our best to provide you with satisfactory customer service.