ISCO 2150 Flow Module with 2191 Battery Module.  Includes Area Velocity Sensor with 10 ft. (3 m) level measurement range and 33 ft. (10 m) cable, 2 battery holders, and carrying handle with suspension strap.  Includes coupon for free ISCO Open Channel Flow Measurement Handbook.  Requires Flowlink software and computer connect cable (sold separately).