Water Detectors Sensitive Leak and Drip Alert Water Alarm Sensor with 10A Rel...
$29.33
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Water Level Control Relay 10A GRL8-01 AC/DC 24V-240V Liquid Level Control Rel...
$43.19
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About this item
Take the relay connected to the water pump as an example. This cycle ensures that the water level is within the normal safety range.
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