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Used on steam boilers. 120VAC Burner circuit contacts open after 15 second delay in a low water condition. Delay prevents short cycling caused by momentary fluctuations in the boiler water level. Automatically reactivates burner circuit 30 seconds after water reaches the probe, allowing optional water feeder to raise water level above the probe.
Ships within 48 hours · Estimated delivery Aug 7 - Aug 12
US$40
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