New tds ec meter temperature tester pen 3 in1 function conductivity water quality measurement tool tds&ec tester 0-9990ppm lock function: makes it easy to read and record, press hold button then remove from test solution. 4 display modes: press shift button: tds – ppm & °c, ec – μs/cm & °c, tds – ppm & °f, ec – μs/cm & °f. 5 minute auto shut off feature, so battery won’t run down. Measurement range: conductivity: 0 – 9990 μs/cm tds: 0 – 9990 ppm (parts per million) degrees celsius: 0.1 – 80.0°c fahrenheit: 32.0 – 176.0°f accuracy: ± 2% net weight: 55g
