Excellent condition, inspected and functional. Complete and very clean inside out, light surface scuffs only. Low range process turbidimeter 1720C control panel by Hach Process Instruments, part no. 44000-10, serial 970200017187. Specifications: 115/230V, 50/60Hz, current 0.5/0.3A, alarm contacts 230VAC, 5A Res. Measures 12 1/2 X 7 1/2 X 7 inches, 11 Pounds.