Specifications include, but are not limited to: Correlating Loggers System with 8 Loggers, 1 Docking Station, USB Cable for PC, PC Software and Manual MFG. - Subsurface Leak Detection, Inc. or approved equal Qty. = 8 Digital Correlating Logger Digital Correlating Logger specifications: Enclosure: Aluminum, cylindrical Protection: IP68 - fully submersible Weight: 1 lb (450 grams) Dimensions: Height = 4.5 inches (11.4 cm) Diameter = 2.25 inches (5.7 cm) Mounting: Magnet, 40 lbs (18 kg) pull force Operating temperature range: -20 to +140F (-30 to +60C) Power Source: Lithium battery, 5-year life, factory-replaceable, non-rechargeable Sensor: High resolution electronic accelerometer; Shockproof to 6,000 g; Sensitivity: 1 V/ g; Resolution: 0.25 g / sqHz Data Acquisition: Frequency range: 1-3,000 Hz; Signal range: sub 1 g - 20 mg; Digital Resolution: 20 bits 1 Docking Station capable of supporting up to 8 Loggers no. DZ-8 ZCorr or approved equal Docking Station specifications: Enclosure: Rugged ABS carrying case Protection: IP68 - closed; IP65 - open Weight: 15 lbs (6.8 kg) without DCLs Dimensions: 20.5 x 16.75 x 8.5 inches (52 x 42 x 22 cm) Operating temperature range: 20 to 140F (-5 to +60C) Capacity: 3 to 8 DCLs PC link: RS-232 Operating Instruction Manual software (requires PC computer with 64 Megabytes RAM, 166 Mega Hz Pentium and Available USB port) ZCorr PRO software or approved equal USB 2.0 Cable for Attaching the Docking Station to a PC Computer One-year warranty covering all parts and labor.