Features of the Neptune Systems pH/ORP Expansion Module:
Monitor and Control pH or ORP and temperature

6 digital inputs for float switches, water on floor sensors, pressure sensors, etc

Full data logging support in Apex Base module

Up to 240 AquaBus modules can be added to the Apex system

Plug and Play - Automatically recognized when installed into the system

2 AquaBus connectors for flexible expansion via AquaBus

Led Status Indicator

Upgradeable firmware

Compatible with all Apex systems

Galvanic Isolation for accurate and reliable probe readings

Comes with 3' AquaBus cable