DC12V Soil Moisture Sensor Relay Control Module Automatic Watering Switch with Time Delay Function 1.7x5x2.5cm/0.67x1.97x0.98in: Amazon.com: Industrial & Scientific
DC12V Soil Moisture Sensor Relay Control Module Automatic Watering Switch with Time Delay Function 1.7x5x2.5cm/0.67x1.97x0.98in: Amazon.com: Industrial & Scientific