YSI ProSwap Logger — External Power (No Battery) Configuration:Medium Depth (non-vented) — 100m cable Lower Explosive Limit (LEL)

Lower Explosive Limit (LEL)

with an audible tone and LED indicator for clear readings

durable aluminum tubing

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YSI ProSwap Logger — External Power (No Battery) Configuration:Medium Depth (non-vented) — 100m cable Lower Explosive Limit (LEL)The 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