Neptune Systems PM1 Apex pH / ORP Probe Module

The Neptune Systems Apex pH / ORP Probe Module PM1 is just what you need if you want to monitor pH or ORP in your tank. And there is an added bonus you get an extra temperature port as well as six I/O switch inputs for use on ATO feed buttons leak alarms or whatever else you may come up with. The Neptune Systems Apex Probe is NOT included. This product will only work with Apex and Apex Lite Aqua Controller Systems. Perfect for someone that wants to add an additional pH or ORP port to their Apex System Monitor pH or ORP. Control outlets based on pH or ORP readings from the probe connected to the PM1. Automatic temperature compensation for pH with connected temperature probe temperature probe optional. Monitor and control temperature with connected temperature probe temperature probe optional. Galvanic Isolation for accurate and reliable probe readings. 6 digital inputs for float switches water on the floor sensors pressure sensors etc. Full data logging and graphing through the Apex Base Module. The PM1 attaches to and is powered by the Apex system via AquaBus. Automatic plug-n-play for easy setup and configuration. Upgradeable firmware through AquaBus via the Apex Base Module. Multi-color LED Status Indicator. 2 AquaBus ports for flexible system connections.