Neptune Systems PM2 Salinity Module

Overview

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.

Key Features

• 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.

Product Specifications

• 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

What’s Included

• (1) Neptune Systems PM2 Salinity Expansion Module

• (1) 3 ft. AquaBus Cable

Note: Salinity and temperature probes sold separately.