1974-T-A Waterproof Turbidity Meter, Waterproof Yes, Automatic Temperature Compensation No, Turbidity Range 0 to 2000 NTU, Display LCD, Auto Power Off Yes, Power Source Lithium Rechargeable Batteries, Includes (6) Sample Vials, Carrying Case, NTRU Standards, USB Cable, Wall Adapter, Water Sample Bottle, Manufacturers Warranty Length 2 yr, Range 0 to 2000 NTU, Number of Tests 0, Includes: (6) Sample Vials, Carrying Case, NTRU Standards, USB Cable, Wall Adapter, Water Sample Bottle