- Description
 - Reviews
 
Having the ability to monitor the salinity of your reef tank is a very valuable piece of information. Usually, if something is to go wrong with your tank, you will usually see a change in salinity from temp, to a top off unit being stuck on, if you have a Neptune Apex Controller we highly recommend investing in the PM2 module and salinity probe.
Add the Salinity Module: PM2 to your Apex Neptune System.
- Real-time monitoring of salinity in reef aquarium
 - Module has extra Temp Probe port
 - I/O Switch Inputs for ATO, feed buttons, leak alarms, etc.
 - Probe Sold Separately.
 
Features of the Neptune Systems Salinity Expansion Module:
- Monitor/Control Conductivity/Salinity and temperature
 - 4 Measurement ranges (0-900 uS/cm, 0-9.0 mS/cm, 0-90.0 mS/cm, 0-50 ppt)
 - 6 digital inputs for float switches, water on floor sensors, pressure sensors, etc
 - Full data logging 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
 - Comes with 3′ AquaBus cable
 - Galvanic Isolation for accurate and reliable probe readings
 - Led Status Indicator
 - Upgradeable firmware
 - Compatible with all Apex systems
 
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