The Whale Watermaster IC Unit intelligently controls the submersible pump
Easily retrofitted to a Whale Watermaster pressure switch socket (only)
This item is compatible with ES1001 Whale Watermaster Socket Pressure Switch in Ivory and ES5001 Whale Watermaster Socket Pressure Switch in White
Please note: This is NOT compatible with WU7207 Whale Grooved Pressure Switch 12mm
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