Absolute Automation Knowledgebase » Floodstop
Do any of the Flood stop models provide for power backup? It appears that either the batteries are inserted OR AC power is available, not both.
The FloodStop “controller” does a quick close/open cycling of the valve once per month. This is a self cleaning operation that insures any buildup (like calcium or scale) is wiped off. Note that this once a month cycling happens when the valve is in the open position, which in almost all cases it would be. [...]