| 摘要 |
A water conductivity sensing and indicating system arranged for association with a water faucet and maintainable water processing apparatus includes apparatus for indicating whether the water conductivity exceeds or is less than some predetermined conductivity level. It also includes apparatus in the form of one or both of a flow actuated switch and a liquid crystal display for limiting battery power consumption to the end that minimum sized batteries need not be replaced oftener than the processing unit need be maintained.
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