Soil moisture sensor 5V 12V relay control module is lower than the humidity automatic watering start switch
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Soil Moisture Sensor Relay Control Module Automatic Watering Of The Humidity Starting Switch](http://ae01.alicdn.com/kf/S2cd6e810647c4561ac92287274419346Y.jpg)
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Soil Moisture Sensor Relay Control Module Automatic Watering Of The Humidity Starting Switch
![Soil Moisture Sensor Relay Control Module Automatic Watering Of The Humidity Starting Switch
Soil Moisture Sensor Relay Control Module Automatic Watering Of The Humidity Starting Switch](http://ae01.alicdn.com/kf/S90bcac6bee234faa8d7139d73e2568ceK.jpg)
21%
$1.06
Soil Moisture Sensor Relay Control Module Automatic Watering Of The Humidity Starting Switch