Specifications include, but are not limited to: 1 - 599502-01 / EXO2 Sonde, 10-meter Depth, 6 Sensor Ports, 1 Wiper Port / - Depth range: 0-10 meters; - AUX port for future expansion; - Contains: Sonde, 4 'D' Batteries, Calibration Cup,Tool Kit, 4 port plugs, USB drive loaded with User Manual and KOR Software (4 @ $5,610.00)2 - 599827 / EXO Wiped Conductivity/Temperature Sensor / - Purpose-built for combatingsensor fouling in long-term monitoring applications; - Designed and engineered for compatibilitywith EXO2 Sonde's Central Wiper; - Additional Central Wiper Brush and Spacing Kit included(4 @ $1,445.00)3 - 577602 / EXO ISE02 pH Sensor Assembly, Unguarded, Ti / - Patented user replaceablesensor head; - Incorporates wet-mate connector and welded titanium housing (4 @ $484.50)4 - 599100-01 / EXO Optical DO Sensor, Ti / - Compatible with any EXO Sonde; - Userreplaceable sensor cap (installed); - Incorporates wet-mate connector and welded titaniumhousing (4 @ $1,699.15)