CALL A.WIHARTA 081294124885 085778084789 087784022201 This meter has been engineered with a host of features suited for the aggressive environments commonly found in agricultural applications. Housings and cable connections have been sealed against vapor and humidity. This EC meter comes with a probe specifically made for horticulture and hydroponics applications. The probe compensates for temperature variations automatically, is easy to clean, is very stable and needs little maintenance. The 12 VDC power supply included with the meter eliminates low battery failures.