Specifications include, but are not limited to: DO Sensor Cap Replacement Kit Brand: YSI Model: 599110 EXO Dissolved Oxygen Sensor Cap Replacement Kit - Replacement sensor cap for EXO optical dissolved oxygen sensor - Includes hydrating cap and quick start guide EXO2 Sonde 10M Vented Level Depth Brand: YSI Model: 599502-04 EXO2 Sonde - Depth range 0-10 meters - AUX port for future expansion - Includes sonde, 4 D batteries, calibration cup, tool kit, 4 port plugs, USB drive loaded with user manual and KOR software Wiped Cond/Temp Brand: YSI Model: 599827 EXO Wiped Conductivity/Temperature Sensor - Purpose-built for combating sensor fouling in long-term monitoring applications - Designed and engineered for compatibility with EXO2 Sonde's central wiper - Includes additional central wiper brush and spacing kit EXO Optical DO Sensor Brand: YSI Model: 599100-01 EXO Optical Dissolved Oxygen Sensor, Ti - Compatible with any EXO sonde - User replaceable sensor cap (installed) - Incorporates wet-mate connector and welded titanium housing EXO Total Algae - PE Sensor Brand: YSI Model: 599103-01 EXO Total Algae - PE Sensor, Ti - Optimized for saltwater use - Phycoerythrin - Includes chlorophyll and blue green algae sensors in a single sensor - Incorporates wet-mate connector and sealed, welded titanium housing