Apex PM1 - pH or ORP, Temperature, I/O Expansion Module - Neptune Systems

Apex PM1 - pH or ORP, Temperature, I/O Expansion Module - Neptune Systems

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$84.95
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$84.95
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The PM1 probe module is just what you need if you want to monitor pH or ORP in your tank. And, there is an added bonus, you get an extra temperature port as well as six I/O switch inputs for use on ATO, feed buttons, or whatever else you may come up...