Welded seal stainless steel cell that is physically but not electrically (2 mv/v rather than 3 mv/v) interchangeable with Sensortronics Model 65023 and RTI Models 5123/9123. NTEP 95-058 M III 5,000 div 2 mv/v, 0.03% comb error, 350/350 ohm, 20 ft 4 cond cable, stainless steel, IP67.