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Viqua 254NM-C1 UV Sensor for VH410M, VP600M, VP950M Systems
The replacement UV sensor for VIQUA VH410M, VP600M, and VP900M UV systems. This sensor monitors and indicates the intensity of UV light being delivered (UV dose) by your system. The sensor also works for the now obsolete Sterilight SCM model UV systems. Please note: The 254NM-C1 cannot be added to your system after the fact. This is only a replacement part and cannot be used to give functionality to a system that doesn't have it.
NOTE: The 254NM-C1 sensors cannot be used as a replacement part on any UV system with a Y-Cable (260134) manufactured before April 30, 2015. If you need to replace the sensor on your system, you must also replace the Y-Cable with one manufactured after April 30, 2015. If a system is not utilizing a Y-Cable, it is not affected by this issue.