pH/ORP Probe Module: PM1 - Neptune Systems

pH/ORP Probe Module: PM1 - Neptune Systems
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pH/ORP Probe Module: PM1 - Neptune Systems

91% Recommend this to a friend (10 of 11)

SKU: 207494
In Stock: 43
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Quick Overview

Add the pH/ORP Probe Expansion Module to your Apex Neptune System.
  • Module has extra Temp Probe port

  • I/O Switch Inputs for ATO, feed buttons, leak alarms, etc.

  • Monitor multiple tanks

  • Galvanic Isolation for accurate and reliable probe readings

Full Details

Features of the Neptune Systems pH/ORP Expansion Module:
  • Monitor and Control pH or ORP and temperature
  • 6 digital inputs for float switches, water on floor sensors, pressure sensors, etc
  • Full datalogging support in Apex Base module
  • Up to 240 AquaBus modules can be added to the Apex system
  • Plug and Play - Automatically recognized when installed into the system
  • 2 AquaBus connectors for flexible expansion via AquaBus
  • Led Status Indicator
  • Upgradeable firmware
  • Compatible with all Apex systems
  • Galvanic Isolation for accurate and reliable probe readings
  • Comes with 3′ AquaBus cable


11 Items

  • Great addon module By Slivacki on 10/18/2017

    if your looking for a way to monitor PH of CaRx then this is what your looking for. If your looking for that extra temp monitor or breakout this is item for you.
  • It works, but with quirks By Randall on 9/2/2017

    Get this and set it up last night. I'm using it for a second temp probe and second ORP probe, both in the overflow. Temp probe setup is straightforward, but at first, only the pH tile (no ORP tile) appears on your Apex dashboard. To get the ORP tile, you need to use the Apex display module, go to System -> ORP Setup, select the new module and Enable. The module manual .pdf says there is no way to do this via the web interface, but that manual is old and may no longer be accurate. I have the Display, so I used it and it worked. But the Display isn't part of the basic Apex setup anymore, so many people may not have it available.

    Also, BRS should change the image in this listing, as the one I received and presumably other PM1s currently shipping are of the newer lighter grey, plastic, concealed screw, style.
  • PH and temp ports By Jason on 1/14/2017

    I mainly purchased this to add another temp sensor to my system. Also, added another i/o port which you can use to add another breakout box. Finally, another pH port is nice, if you want to have another pH measurement from you tank or sump. Overall useful module and I have experienced no issues with it to date.
  • Great product By Randy on 4/1/2016

    Purchased this from BRS came the next day. Hooked it up and would not configure. Sent an email to Apex and received a prompt response. We set up a time for a phone session and the problem was quickly resolved. Anyone can make a good product. However, in my experience not everyone has great customer support. Neptune Apex does both! BRS carries tested and tried products and this one does all that it says it does with a company behind it that offers great support for when things don't go as planned.
  • Calibration issues By Dave on 3/2/2016

    Not sure if probe or module, but can't get it to calibrate
  • Orp monitoring like a boss By William on 8/28/2015

    Took my system up one more notch with another great product from Neptune and made even more enjoyable by excellent service and support from the fine folks at BRS. :D
  • satisfy By Randy on 6/10/2015

    Work great!
  • a++ By Josh on 7/13/2014

    Added one of these to contol pH and temp in my 2nd tank.
  • No issues By JohnD on 7/13/2014

    It does what it's supposed to and I'm using it for temp, PH, and I/O Breakout with no complaints.
  • Finally works By Jim on 6/27/2014

    Works now but they have manufacturing quality issues with the PM1/PM2 where it won't stay online and the green light starts flashing when it goes offline. It took literally a day wasted back and forth email (they don't answer phones or even have a support phone queue) with Neptune before they logged in and fixed it with a manual patch. That seems to have worked but I was told if that didn't fix it then it needed to be sent back RMA. Fortunately I have not had this issue with the PM2. True to Neptune they won't ever acknowledge/admit what the problem is. I was going to return it to BRS for a new one but after agreeing to a RMA (your on your own to deal with manufacturer after 14 days) took 4 days to email it to me. That was strike two for BRS.
  • Plug n play By Reefsi on 4/20/2014

    Basically plug and play. Plug it in, it may need updated and works like a charm along with the other Neptune accessories.


Ask a question

Product Questions

can i use a tenp probe on this too
Question by: jordan m on Jan 3, 2014 5:01:00 PM
Hi Jordan,
The PM1 does come with a port for an additional temperature probe as well (probe sold separately).
Answer by: Bulk Reef Supply on Jan 3, 2014 5:01:00 PM

Does the module come with a standard probe? Or do I have purchase it separately?
Question by: Robert on May 8, 2016 4:19:00 PM
Great question!
This will only include the Module itself without the probes which are sold separately. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on May 10, 2016 6:03:00 PM
I would like to add a second ph probe and my EB8 has no available aquabus slots. Can the aquabus connection be made to an open slot on the Apex unit?
Question by: Russ Feilzer on Nov 15, 2016 2:22:00 PM
Great question! You can plug this module into any open Aquabus port. If you have an open one on the Apex Head unit, you can utilize it. :-)
Answer by: Randy (Admin) on Nov 15, 2016 2:51:00 PM
Is this compatible with the Apex Jr?
Question by: Kenyi on Jul 30, 2014 1:39:00 PM
Hi Kenyi,
It sure is. The only detail is that Apex Jr has a 5 module maximum, so if you already have 5 modules, then you cannot add any more (PM1 or any other type). If you don't already have 5 modules, then you can add it no problem.
Answer by: Bulk Reef Supply on Jul 30, 2014 1:39:00 PM