Salinity Module - PM2 will be constantly monitoring of salinity in your aquarium and will let you know the minute it is trending outside of the safety zone.

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

Salinity Module - PM2 - Neptune Systems

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