PM1 pH/ORP Probe Module - Neptune Systems

The Neptune Systems PM1 pH/ORP Probe Module expands your Apex controller with another probe input. Connect an Apex pH probe or an Apex ORP probe, plus a temperature probe, and use the module's switch inputs for ATO float switches, feed buttons, leak alarms, and more. It is a practical way to monitor multiple tanks or add sensing to a growing system.

Why Add the PM1 to Your Apex?

• pH or ORP monitoring and control through a dedicated probe port
• Extra temperature probe port for monitoring a second tank or sump
• 6 digital inputs for float switches, water-on-floor sensors, pressure sensors, and similar devices
• Galvanic isolation for accurate and reliable probe readings
• Plug and play: automatically recognized when installed into the system
• Full datalogging support in the Apex base module
• 2 AquaBus connectors for flexible expansion
• LED status indicator and upgradeable firmware

Monitor More With One Module

The PM1 is built for reefkeepers who want to track more than one system, or more points within one system, from a single Apex. Plug a Neptune pH probe or ORP probe into the module to monitor and control pH or ORP, add a temperature probe to the extra port, and your readings are logged alongside the rest of your Apex data.

The module's I/O switch inputs let you connect the sensors and switches that help protect your aquarium: float switches for your auto top off, water-on-floor leak sensors, feed buttons, and pressure sensors.

Accurate Readings With Galvanic Isolation

When several probes share water or equipment, electrical interference can affect readings. The PM1 uses galvanic isolation to keep probe readings accurate and reliable, which is especially helpful when you are monitoring multiple tanks or running a lot of equipment in one sump.

Expand Your Apex System

The PM1 connects via AquaBus and is automatically recognized when installed. Two AquaBus connectors let you daisy-chain it with other modules, and Neptune Systems notes that up to 240 AquaBus modules can be added to an Apex system.

Compatibility and What's Included