| 摘要 |
A water temperature indicating device includes a tube having a port which includes a compartment formed by a bottom wall, a housing attached to the coupler, a circuit board disposed in the housing and has a light element, a processor device is attached to the circuit board for actuating the light element, a sensing device attached to the bottom wall of the coupler for detecting a water temperature and for sending the detected water temperature to the processor device and to operate the light element, and a water operated switching device is used for actuating the processor device to operate the light element with the water flowing through the chamber of the tube.
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