Beside the tension switch and the drip irrigation system one need a solenoid valve for opening and closing the water pipe. Since drip irrigation ... Corresponding to that, the solenoid valve and the feeler work with 2k Volt low voltage (Photo 3).
|Title||:||Symposium on Water Supply and Irrigation, Bet Dagan, Israel, 8-13 January 1978|
|Author||:||H. H. van der Borg|