| 摘要 |
There is described a programmable electronic timer for the control of a solenoid valve, particularly for watering systems. The timer comprises a start button, a stop button and a programmable processing unit. The latter is preset to determine, as a consequence to the operation on said start button, the opening of the controlled solenoid valve and the starting of a time count and, as a consequence to the operation on said stop button, the closing of the solenoid valve and the end of said time count with memorisation of the counted time for the subsequent automatic control of the opening and closing of the solenoid valve in the next days at the same time and for the same watering length of time.
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