Comparison : |
Item # R7031-10K, Resilite Water Quality Indicator Light- 10k Ohm·cm Resistivity Threshold, Green-Red Light, 110V Power Adapter, 1/2" NPT Male Pipe Thread Item # R7031-20K, Resilite Water Quality Indicator Light- 20K Ohm·cm Resistivity Threshold, Green-Red Light, 110V Power Adapter, 1/2" NPT Male Pipe Thread Item # R7031-50K, Resilite Water Quality Indicator Light- 50K Ohm·cm Resistivity Threshold, Green-Red Light, 110V Power Adapter, 1/2" NPT Male Pipe Thread Item # R7031-200K, Resilite Water Quality Indicator Light- 200k Ohm·cm Resistivity Threshold, Green-Red Light, 110V Power Adapter, 1/2" NPT Male Pipe Thread Item # R7031-500K, Resilite Water Quality Indicator Light- 500k Ohm·cm Resistivity Threshold, Green-Red Light, 110V Power Adapter, 1/2" NPT Male Pipe Thread
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