HM Digital 716160 COM-100 WATERPROOF PROFESSIONAL SERIES Combo Meter, 7″,
S; 0 – 9.99 Ms.-TDS Range: 0 – 8560 ppm (mg/L); 0 – 8.56 ppt.-Temperature Range: 0-80 degrees C; 32-176 degrees F.-Resolution: 0-99: 0.1 ?. S/ppm/MS/ppt; 100-999: 1 ?. S/ppm; 1000-9990: 10 ?. Includes: -Power source: 3 x 1.5V button cell batteries (included) (model 357A).