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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
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Kemo Soil humidity sensor M173 12 V/DC with LED indicator, free potential relay contact, infinitely adjustable switching threshold : Amazon.com.be: Industrial & Scientific
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Humidity Sensor Module Relay | Relay Control Module | Moisture Sensor | Replacement Parts - Replacement Parts - Aliexpress
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12V soil humidity sensor relay control module is automatically watering below the humidity start switch
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