COMBO PH / EC / TDS / TEMP METER 4 IN 1 We Gaby Instruments is the manufacturer of f PH  EC  TDS  TEMP METER 4 IN 1 COMBO METER And supplier of Anemometer in Coimbatore, Kerala, Tirupur, Pollachi, Erode, Salem, Chennai, Karur, Banglore, Idukki, Cochin, Trishur, Ernakulam, Trivandrum, Madurai, Tirunelveli SPECIFICATION:Ø  pH:0.00-14.00pHØ  TDS: 0-19990ppmØ  EC: 0-19990μS/cmØ  TEMPERATURE: 0.1°C-60.0°CØ  RESOLUTION: pH -0.01 pH;TDS- 1ppm;EC-1μS/cm;TEMP 0.1℃; 0.1°FØ  ACCURACY:pH: +/-0.01 pH;TDS/EC: +/-2%;Temp: 0.5℃Ø  BATTERIES: 3 * 1.5V LR44 button cell Ø  TEMP.: 0.1-60.0℃;  32.0-140.0°F Ø  CALIBRATION: pH: three points automatic calibration (6.86 & 4.00 & 9.18pH); TDS: 1413μS/cm; EC: 1413μS/cm  Auto shut off: 5 Minutes