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Ships within 48 hours · Estimated delivery Sep 9 - Sep 14
The Controller is very simple—a container with a float valve is connected to the line of units
You don't see them
Meters can be recalibrated
120V cord (240V cord sold separately)
GroLine pH/EC/TDS Multiparameter Probe (Inline) Pumps & Irrigation The Controller is very simple—aThe HI1285 9 inline multiparameter probe measures pH, EC TDS, and temperature in one convenient, rugged probe. Use with the HI981421 GroLine Monitor to provide around the clock, continuous monitoring of pH, conductivity (EC & TDS), and temperature in hydroponic nutrient solutions. In line pH, EC, & TDS probe with exclusive PTFE non clogging membrane. Built in temperature sensor ensures fast, accurately compensated readings even during sudden