The Neptune Systems PM2 Salinity Module adds advanced conductivity and salinity monitoring to your Apex Aquarium Controller. Designed for reef aquariums, the PM2 allows for real-time tracking of salinity and temperature while also providing I/O expansion for float switches, leak detectors, and other accessories. With full Apex Fusion integration, you can log data, set alarms, and automate responses to maintain stable water chemistry.
Real-Time Monitoring – Provides continuous conductivity/salinity and temperature tracking.
Multiple Ranges – Selectable measurement ranges:
0–900 µS/cm
0–9.0 mS/cm
0–90.0 mS/cm
0–50 ppt
I/O Expansion – Includes six digital inputs for float switches, leak alarms, and pressure sensors.
Data Logging – Full integration with Apex for monitoring, alerts, and automation.
Plug & Play Setup – Automatically recognized when connected to Apex.
Flexible Connectivity – Equipped with two AquaBus ports for easy expansion.
Reliable Readings – Galvanic isolation ensures accurate and stable probe data.
Upgradeable Firmware – Keeps the module current with future Apex system updates.
Universal Compatibility – Works with all Neptune Systems Apex Controllers.
Model: PM2 Salinity Expansion Module
Probe Support: 1x Conductivity/Salinity probe (sold separately) + 1x Temperature probe (sold separately)
I/O Inputs: 6 digital inputs for external switches/sensors
Connectivity: 2x AquaBus ports
Cable: 3 ft. AquaBus cable included
Indicator: LED status light
System Capacity: Supports up to 240 AquaBus modules in one Apex system
(1) Neptune Systems PM2 Salinity Expansion Module
(1) 3 ft. AquaBus Cable
Note: Salinity and temperature probes sold separately.