YSI ProSwap Logger — External Power (No Battery) Configuration:Medium Depth (non-vented) — 100m cable Modbus Battery Life Up to

Modbus Battery Life Up to 10 years (based on Wellhead battery/logging rate) Additional replacement parts and accessories are available in the Solinst LevelVent Parts & Accessories collection

pH (Phenol Red) reagent pack for the 9300

with an audible tone and LED indicator for clear readings

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YSI ProSwap Logger — External Power (No Battery) Configuration:Medium Depth (non-vented) — 100m cable Modbus Battery Life Up toThe no battery version of the YSI ProSwap Logger same slim, single port submersible sonde with built in temperature and depth sensors, but requires external power via the Topside Power Pack (6AA batteries) or Flying Lead Adapter (connects to an existing DCP). Ideal for sites where AC or DCP power is already available, or where an extended power pack is preferred over a rechargeable internal battery. Add any single ProDSS Digital Smart Sensor (sold