Gardena Electronic rain gauge: the rain sensor allows rain to be taken into account in the programming of the watering, measures 24 hours a day, water saving and environmentally friendly (1189-20) :
HOW TO INSTALL IRRIGATION in 15 MIN l Install / Gardena Timer / Rainbird Sprinkler - YouTube
MANOS TRAVEL SYSTEM / EDITING | Louis T. Economopoulos
Gardena Bewässerungssteuerung C 14 e
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OM, Gardena, Water Timer Electronic C14e, Art 01820-02, 2013-03