Overview

The Neptune Systems PM1 Module expands the monitoring capabilities of your Apex Controller by adding support for an additional pH or ORP probe, along with temperature monitoring and I/O expansion. Whether you want to track pH in a calcium reactor, monitor ORP for ozone control, or add redundancy across multiple aquariums, the PM1 provides reliable and versatile functionality.

Key Features

• Dual Probe Capability – Supports either a pH or ORP probe (sold separately).

• Additional Temperature Monitoring – Extra port for a temperature probe (sold separately).

• I/O Expansion – Includes an I/O port for use with the Breakout Box to connect switches or buttons.

• Seamless Apex Integration – Connects via AquaBus and is compatible with all Apex systems.

• Flexible Applications – Monitor a second tank, automate calcium reactors, control ozone generators, or track ambient air temperature.

• Expandable Control – Use the I/O port to trigger feed modes, timers, float switches, and more.

Product Specifications

• Model: PM1 Module

• Ports:

  • 1x pH/ORP probe port

  • 1x temperature probe port

  • 1x I/O port

  • 2x AquaBus ports

• Compatibility: All Neptune Apex Controllers

• Connectivity: AquaBus (3 ft. cable included)

What’s Included

• (1) PM1 Module

• (1) 3 ft. AquaBus Cable

Note: Probes and accessories sold separately.