As an Amazon Associate, we earn from qualifying purchases. PM1 pH/ORP Probe Module - Bulk Reef Supply Neptune Systems . 207494 Gallery Attributes Brand name, Manufacturer name, ManufacturerNeptune Systems Extra Product NamePM1 pH/ORP Probe Module - Bulk Reef Supply extendedQty, qtyInStock0 keywordssaltwater aquarium supplies, reef aquarium supplies, marine fish tank, live rock, GFO, protein skimmers, two part dosing, aquarium carbon, fish food, RO/DI Systems, ecotech marine, aquaillumination, neptune systems, kessil, innovative marine moq, multiple, tierMinQty11 MPN, SKU207494 qtySourceupdateFromUrlEntry snippetAdd the pH/ORP Probe Expansion Module to your Apex Neptune System. Module has extra Temp Probe port I/O Switch Inputs for ATO, feed buttons, leak alarms, etc. Monitor multiple tanks Galvanic Isolation for accurate and reliable probe readings 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 datalogging 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 Iso tierPrice194.99 Distributor offers SellerSKUMOQIn stockMultiplePrices bulkreefsupply.com207494111 @ $94.99